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Dayang Chem (Hangzhou) Co.,Ltd.

Dayangchem's R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. DayangChem can provide different quantities

SPERMINE TETRAHYDROCHLORIDE

Cas:28564-83-2

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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Hebei Nengqian Chemical Import and Export Co., LTD

Our Advantage Rich Experience Our products are sold all over Europe,North&South America, Sino-East, Asia and pacific area as well as Africa,we establish long term. Quality service Company cooperates with research institutes. We strictly con

2,3-Dihydro-3,5-dihydroxy-6-methyl-4(H)-pyran-4-one CAS 28564-83-2

Cas:28564-83-2

Min.Order:1 Kilogram

FOB Price: $1.0 / 10.0

Type:Trading Company

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Zhuozhou Wenxi import and Export Co., Ltd

WITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et

Factory direct supply CAS 28564-83-2 with best quality

Cas:28564-83-2

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

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Shanghai Upbio Tech Co.,Ltd

1.No Less 8 years exporting experience. Clients can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specialized

4H-Pyran-4-one,2,3-dihydro-3,5-dihydroxy-6-methyl- 28564-83-2

Cas:28564-83-2

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Qingdao Beluga Import and Export Co., LTD

2,3-Dihydro-3,5-dihydroxy-6-methyl-4(H)-pyran-4-one CAS:28564-83-2 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specializi

2,3-Dihydro-3,5-dihydroxy-6-methyl-4(H)-pyran-4-one CAS:28564-83-2

Cas:28564-83-2

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Shandong Hanjiang Chemical Co., Ltd.

Hello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by emai

4H-Pyran-4-one,2,3-dihydro-3,5-dihydroxy-6-methyl-

Cas:28564-83-2

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Henan Wentao Chemical Product Co., Ltd.

Henan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod

4H-Pyran-4-one,2,3-dihydro-3,5-dihydroxy-6-methyl-

Cas:28564-83-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Zibo Hangyu Biotechnology Development Co., Ltd

Zibo Hangyu Biotechnology Development Co., Ltd is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemi

2,3-Dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

Cas:28564-83-2

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

inquiry

HANGZHOU YUNUO CHEMICAL CO.,LTD

Superior quality, moderate price & quick delivery. Appearance:white powder Storage:Stored in cool, dry and ventilation place; Away from fire and heat Package:25kg/drum, or as per your request. Application:Used as Pharmaceutical Intermediates Tr

4H-Pyran-4-one,2,3-dihydro-3,5-dihydroxy-6-methyl-

Cas:28564-83-2

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

inquiry

Jiangsu Qianyu Molecular Technology Co., LTD.

Our Advantages A. International Top level TechnologyOur company owned biomedicine experts are famous at home and abroad with rich experience in research and development in the field of efficient chiral functional molecules research and development an

In Bulk Supply2,3-Dihydro-3,5-dihydroxy-6-methyl-4(H)-pyran-4-one

Cas:28564-83-2

Min.Order:0

Negotiable

Type:Trading Company

inquiry

EAST CHEMSOURCES LIMITED

factory?direct?saleAppearance:White Powder Storage:Store In Dry, Cool And Ventilated Place Package:25kg/drum, also according to the clients requirement Application:It is widely used as a thickener, emulsifier and stabilizer Transportation:By Sea Or B

2,3-Dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

Cas:28564-83-2

Min.Order:1 Kilogram

FOB Price: $18.0 / 20.0

Type:Trading Company

inquiry

TAIZHOU ZHENYU BIOTECHNOLOGY CO., LTD

Zhenyu biotech exported this product to many countries and regions at best price. if you are looking for the material's manufacturer or supplier in china, zhenyu biotech is your best choice. pls contact with us freely for getting detailed

2,3-Dihydro-3,5-dihydroxy-6-methyl-4(H)-pyran-4-one

Cas:28564-83-2

Min.Order:1 Kilogram

FOB Price: $2.0

Type:Lab/Research institutions

inquiry

Shandong Mopai Biotechnology Co., LTD

Shandong Mopai Biotechnology Co., LTD is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemicals. W

2,3-Dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

Cas:28564-83-2

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

KAISA GROUP INC

1.Applied in food field.it can improve the immune system and prolong life. 2.Appliedin cosmetic field.it can improve the skin care. 3.Applied in pharmaceutical field.it can treat various dieases. 4.Our product quality assurance will make our customer

2,3-Dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

Cas:28564-83-2

Min.Order:1 Metric Ton

FOB Price: $1.5

Type:Trading Company

inquiry

Triumph International Development Limilted

Triumph has the complete production of G- KG - MT service chain,we can make the new technology into productivity quickly in the research and development of new products. Main Business Custom Synthesis:

2,3-Dihydro-3,5-dihydroxy-6-methyl-4(H)-pyran-4-one

Cas:28564-83-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Golden Pharma Co., Limited

GOLDEN PHARMA CO.,LIMITED.is a professional pharmaceutical company,our team have more than 20years expereince in pharmaceutical production and sales. we are a professional technical enterprise specializing in the R & D, production,QA regulation

2,3-Dihydro-3,5-dihydroxy-6-methyl-4(H)-pyran-4-one

Cas:28564-83-2

Min.Order:1 Kilogram

Negotiable

Type:Other

inquiry

Bluecrystal chem-union

We are a Union of chemistry in China, consists of chemists,engineers, laboratories,factories in China. We organize surplus capacity of R&D and production as well as custom synthesis for chemical products and chemical business project. We are supp

2,3-Dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

Cas:28564-83-2

Min.Order:1 Metric Ton

FOB Price: $1.0

Type:Trading Company

inquiry

Hebei Mojin Biotechnology Co.,Ltd

1, High quality with competitive price:2, Fast and safe delivery3.Excellent pre-sales and after-sales service4. Well-trained and professional technologist and sales with rich experience in the field for 5-10 yearsAppearance:see detailed specification

4H-Pyran-4-one,2,3-dihydro-3,5-dihydroxy-6-methyl-

Cas:28564-83-2

Min.Order:0

Negotiable

Type:Trading Company

inquiry

GIHI CHEMICALS CO.,LIMITED

Lower price, sample is available,SDS test documents are available,large stock in warehouseAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:Fine chemical intermediates, used as the main raw material for the synthe

4H-Pyran-4-one,2,3-dihydro-3,5-dihydroxy-6-methyl-

Cas:28564-83-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou Dingyan Chem Co., Ltd

R & D enterprises have their own stock in stock Package:1kg Application:pharmaceutical intermediates

4H-Pyran-4-one,2,3-dihydro-3,5-dihydroxy-6-methyl-

Cas:28564-83-2

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Hangzhou J&H Chemical Co., Ltd.

J&H CHEM is one of China's leading providers of integrated fine chemical services including offering, research and development, Custom manufacturing business, as well as other Value-added customer services, for diversified range products of chemicals

2,3-Dihydro-3,5-dihydroxy-6-methyl-4(H)-pyran-4-one

Cas:28564-83-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Henan Tianfu Chemical Co., Ltd.

1.Our services:A.Supply sampleB.The packing also can be according the customers` requirmentC.Any inquiries will be replied within 24 hoursD.we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate.

4H-Pyran-4-one,2,3-dihydro-3,5-dihydroxy-6-methyl-

Cas:28564-83-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Xian Changyue Biological Technology Co., Ltd.

best seller Application:API

2,3-Dihydro-3,5-dihydroxy-6-methyl-4(H)-pyran-4-one

Cas:28564-83-2

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Wuhan Circle Star Chem-medical Technology co.,Ltd.

1,we produce and sell good chemicals around the world.2,our success rate is about 95%. this means, if customer order is accepted, the probability that the customer will obtain the ordered substances, is 95%.3,our staff consists of highly qualified in

2,3-Dihydro-3,5-dihydroxy-6-methyl-4(H)-pyran-4-one

Cas:28564-83-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Antimex Chemical Limied

Ansciep Chemical is a professional enterprise manufacturing and distributing fine chemicals and speciality chemicals. We have been dedicated to heterocycle compounds and phenyl rings for tens of years. This is our mature product for export. Our quali

4H-Pyran-4-one,2,3-dihydro-3,5-dihydroxy-6-methyl-

Cas:28564-83-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hubei Langyou International Trading Co., Ltd

2,3-Dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one Application:2,3-Dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

2,3-Dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

Cas:28564-83-2

Min.Order:0

Negotiable

Type:Other

inquiry

DB BIOTECH CO., LTD

best seller Application:API

2,3-Dihydro-3,5-dihydroxy-6-methyl-4(H)-pyran-4-one

Cas:28564-83-2

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Hangzhou Fandachem Co.,Ltd

4H-Pyran-4-one,2,3-dihydro-3,5-dihydroxy-6-methyl-Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:pharmaceutical intermediate Transportation:by air, by sea, by express

4H-Pyran-4-one,2,3-dihydro-3,5-dihydroxy-6-methyl-

Cas:28564-83-2

Min.Order:0

Negotiable

Type:Other

inquiry

Henan Kanbei Chemical Co.,LTD

factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin

2,3-Dihydro-3,5-dihydroxy-6-methyl-4(H)-pyran-4-one

Cas:28564-83-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hebei Quanhe Biotechnology Co. LTD

1. Timely and efficient service to ensure communication with customers2. Produce products of different specifications and sizes according to your requirements.3. Quality procedures and standards recognized by SGS. Advanced plant equipment ensures sta

2,3-Dihydro-3,5-dihydroxy-6-methyl-4(H)-pyran-4-one

Cas:28564-83-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Synthetic route

2,3-dihydro-3-hydroxy-5-acetoxy-6-methyl-4H-pyran-4-one

2,3-dihydro-3-hydroxy-5-acetoxy-6-methyl-4H-pyran-4-one

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With methanol; sodium methylate at 20℃; for 10h;97.22%
piperidine
110-89-4

piperidine

1-deoxy-D-erythro-2,3-hexodiulose

1-deoxy-D-erythro-2,3-hexodiulose

A

4-hydroxy-2-(hydroxymethyl)-5-methyl-3(2H)-furanone
17678-20-5

4-hydroxy-2-(hydroxymethyl)-5-methyl-3(2H)-furanone

B

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

C

piperidino-hexose-reductone
34421-11-9, 39994-32-6

piperidino-hexose-reductone

Conditions
ConditionsYield
In ethanol; water; acetic acid at 75℃; for 20h; Heating;A 21%
B 8.8%
C 20%
D-Galactose
59-23-4

D-Galactose

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
Stage #1: D-Galactose With morpholine In ethanol at 60℃; for 3h;
Stage #2: With chloroacetic acid In ethanol at 75℃; for 30h;
20.3%
D-glucose
50-99-7

D-glucose

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
Stage #1: D-glucose With pyrrolidine In ethanol at 60℃; for 4h;
Stage #2: With acetic acid In ethanol at 75℃; for 40h;
16.5%
Stage #1: D-glucose With piperidine In ethanol at 90℃; for 1.5h;
Stage #2: With acetic acid In ethanol for 22h; Reflux;
7%
Stage #1: D-glucose With piperidine; acetic acid; triethylamine at 20 - 70℃;
Stage #2: With mercaptoacetic acid In ethanol at 75℃; for 20.6667h;
D-Mannose
3458-28-4

D-Mannose

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
Stage #1: D-Mannose With diethylamine In ethanol at 60℃; for 2h;
Stage #2: With acetic acid In ethanol at 75℃; for 20h;
12.4%
alpha-D-glucopyranose
492-62-6

alpha-D-glucopyranose

2,2-dimethylpropylamine
5813-64-9

2,2-dimethylpropylamine

A

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

B

2-acetyl-neopentylpyrrole
114853-23-5

2-acetyl-neopentylpyrrole

C

2-(2-hydroxyacetyl)-1-neopentylpyrrole
114853-24-6

2-(2-hydroxyacetyl)-1-neopentylpyrrole

D

5-hydroxymethyl-1-neopentylpyrrole-2-carbaldehyde
114853-25-7

5-hydroxymethyl-1-neopentylpyrrole-2-carbaldehyde

Conditions
ConditionsYield
10 days of incubation under physiological pH and temperature; Yield given. Yields of byproduct given;
1-deoxy-1-(N-methylanilino)-D-fructose
71143-97-0

1-deoxy-1-(N-methylanilino)-D-fructose

A

(2-furyl)methyl alcohol
98-00-0

(2-furyl)methyl alcohol

B

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

C

ethanol
64-17-5

ethanol

D

acetic acid
64-19-7

acetic acid

E

N-methyl-N-phenylformamide
93-61-8

N-methyl-N-phenylformamide

F

N-methylaniline
100-61-8

N-methylaniline

Conditions
ConditionsYield
at 250℃; for 0.25h; Product distribution;
1-deoxy-1-dibenzylamino-D-fructose
69712-22-7

1-deoxy-1-dibenzylamino-D-fructose

A

1-benzyl-1H-pyrrole
2051-97-0

1-benzyl-1H-pyrrole

B

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

C

N-methyldibenzylamine
102-05-6

N-methyldibenzylamine

D

benzaldehyde
100-52-7

benzaldehyde

E

acetic acid
64-19-7

acetic acid

F

dibenzylamine
103-49-1

dibenzylamine

Conditions
ConditionsYield
at 250℃; for 0.25h; Product distribution;
D-glucose
50-99-7

D-glucose

glycine
56-40-6

glycine

A

(2-furyl)methyl alcohol
98-00-0

(2-furyl)methyl alcohol

B

2,5-Dimethylpyrrole
625-84-3

2,5-Dimethylpyrrole

C

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

D

2-Acetylpyrrole
1072-83-9

2-Acetylpyrrole

E

acetic acid
64-19-7

acetic acid

F

propionic acid
802294-64-0

propionic acid

Conditions
ConditionsYield
In water at 95℃; for 2h; Product distribution; other reaction time, other temperature;
D-Glucose
2280-44-6

D-Glucose

A

(2-furyl)methyl alcohol
98-00-0

(2-furyl)methyl alcohol

B

formyl-2 methyl-5 pyrrole
1192-79-6

formyl-2 methyl-5 pyrrole

C

5-hydroxymethyl-2-furfuraldehyde
67-47-0

5-hydroxymethyl-2-furfuraldehyde

D

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

E

2-Acetylpyrrole
1072-83-9

2-Acetylpyrrole

Conditions
ConditionsYield
With L-Lysine hydrochloride; sodium hydrogencarbonate In water at 75℃; for 24h; Product distribution; pH 6.5; other times;
1-<(2'-carboxy)pyrrolidinyl>-1-deoxy-D-fructose

1-<(2'-carboxy)pyrrolidinyl>-1-deoxy-D-fructose

A

3-(1'-pyrrolidinyl)-2-butanone
97073-15-9

3-(1'-pyrrolidinyl)-2-butanone

B

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

C

1-(pyrrolidin-1-yl)butan-1-one
33527-93-4

1-(pyrrolidin-1-yl)butan-1-one

D

1-(1'-pyrrolidinyl)-2-propanone
54151-38-1

1-(1'-pyrrolidinyl)-2-propanone

E

1-(1'-pyrrolidinyl)-2-butanone
97073-14-8

1-(1'-pyrrolidinyl)-2-butanone

F

2-hydroxy-1-(1'-pyrrolidinyl)-1-buten-3-one

2-hydroxy-1-(1'-pyrrolidinyl)-1-buten-3-one

Conditions
ConditionsYield
at 250℃; for 0.00555556h; Product distribution; var. temp., var. time, also D-glucose/proline;
alpha-D-glucopyranose
492-62-6

alpha-D-glucopyranose

acetic acid
64-19-7

acetic acid

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With piperidine 1.) C2H5OH, reflux, 1.5 h, 2.) C2H5OH, 90 deg C, 22 h; Yield given. Multistep reaction;
(R)-3,4,5,6-Tetrahydroxy-1-morpholin-4-yl-hexan-2-one

(R)-3,4,5,6-Tetrahydroxy-1-morpholin-4-yl-hexan-2-one

A

morpholine
110-91-8

morpholine

B

3-morpholinoacetone
6704-35-4

3-morpholinoacetone

C

1,2-(N'N'-dimorpholino)-1-propene
51060-15-2

1,2-(N'N'-dimorpholino)-1-propene

D

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

E

acetic acid
64-19-7

acetic acid

F

2-hydroxy-1-(N-morpholino)-1-buten-3-one

2-hydroxy-1-(N-morpholino)-1-buten-3-one

Conditions
ConditionsYield
With other Amadori compounds at 250℃; for 20h; Mechanism;A 32.6 % Chromat.
B 10.1 % Chromat.
C 1.9 % Chromat.
D 1.9 % Chromat.
E 21.6 % Chromat.
F 10.1 % Chromat.
N-β-D-glucopyranosyl-3-chloro-4-methylaniline

N-β-D-glucopyranosyl-3-chloro-4-methylaniline

A

5-hydroxymethyl-2-furfuraldehyde
67-47-0

5-hydroxymethyl-2-furfuraldehyde

B

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With potassium disulphite Mechanism; Irradiation; degradation in watermelon bait;
D-Glucose
2280-44-6

D-Glucose

glycine
56-40-6

glycine

A

5-hydroxymethyl-2-furfuraldehyde
67-47-0

5-hydroxymethyl-2-furfuraldehyde

B

4-hydroxy-2-(hydroxymethyl)-5-methyl-3(2H)-furanone
17678-20-5

4-hydroxy-2-(hydroxymethyl)-5-methyl-3(2H)-furanone

C

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

D

2-acetyl-6-hydroxy-7-(hydroxymethyl)-1,5,6,7-tetrahydro-4H-azepinone

2-acetyl-6-hydroxy-7-(hydroxymethyl)-1,5,6,7-tetrahydro-4H-azepinone

Conditions
ConditionsYield
In water for 2h; Heating; pH 5;
D-glucose
50-99-7

D-glucose

A

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

B

5-hydroxymaltol
1073-96-7

5-hydroxymaltol

Conditions
ConditionsYield
Stage #1: D-glucose With piperidine In ethanol for 2h; Condensation; Heating;
Stage #2: With mercaptoacetic acid In ethanol for 24h; Elimination; Heating; Title compound not separated from byproducts;
D-glucose
50-99-7

D-glucose

A

4-hydroxy-2-(hydroxymethyl)-5-methyl-3(2H)-furanone
17678-20-5

4-hydroxy-2-(hydroxymethyl)-5-methyl-3(2H)-furanone

B

furaneol
3658-77-3

furaneol

C

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With glycine In water for 4h; Maillard reaction; Heating;A n/a
B n/a
C 7.1 mg
D-Glucose
2280-44-6

D-Glucose

bovine serum albumin

bovine serum albumin

A

furaneol
3658-77-3

furaneol

B

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

C

4-hydroxy-5-methyl-3[2H]-furanone
19322-27-1

4-hydroxy-5-methyl-3[2H]-furanone

Conditions
ConditionsYield
In phosphate buffer; water at 37℃; for 2191.5h; pH=7.4; Maillard reaction;
1-deoxy-2,3-D-erythro-hexo-2,3-diulose

1-deoxy-2,3-D-erythro-hexo-2,3-diulose

A

LACTIC ACID
849585-22-4

LACTIC ACID

B

4-hydroxy-2-(hydroxymethyl)-5-methyl-3(2H)-furanone
17678-20-5

4-hydroxy-2-(hydroxymethyl)-5-methyl-3(2H)-furanone

C

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

F

1-hydroxy-butane-2,3-dione
114794-47-7

1-hydroxy-butane-2,3-dione

G

3,4-dihydroxy-2-oxobutanal
25691-81-0

3,4-dihydroxy-2-oxobutanal

H

4-hydroxy-2-oxobutanal
28119-61-1

4-hydroxy-2-oxobutanal

I

acetic acid
64-19-7

acetic acid

J

hydroxy-2-propanone
116-09-6

hydroxy-2-propanone

Conditions
ConditionsYield
With L-alanin; diethylenetriaminopentaacetic acid at 37℃; Mechanism; Kinetics; Temperature; Reagent/catalyst; Maillard reaction; aq. phosphate buffer; Inert atmosphere;
1-deoxy-2,3-D-erythro-hexo-2,3-diulose

1-deoxy-2,3-D-erythro-hexo-2,3-diulose

A

LACTIC ACID
849585-22-4

LACTIC ACID

B

4-hydroxy-2-(hydroxymethyl)-5-methyl-3(2H)-furanone
17678-20-5

4-hydroxy-2-(hydroxymethyl)-5-methyl-3(2H)-furanone

C

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

D

erythrulose
40031-31-0

erythrulose

E

glyceric acid
473-81-4

glyceric acid

F

acetaldehyde
75-07-0

acetaldehyde

G

Glycolaldehyde
141-46-8

Glycolaldehyde

H

Glyceraldehyde
56-82-6

Glyceraldehyde

Conditions
ConditionsYield
With L-alanin at 50℃; for 48h; pH=7.4; aq. phosphate buffer; in air;
D-glucose

D-glucose

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
Stage #1: D-glucose With piperidine In ethanol Reflux; Inert atmosphere;
Stage #2: With acetic acid In ethanol Heating; Inert atmosphere;
D-maltose
69-79-4

D-maltose

A

furfural
98-01-1

furfural

B

1-(2-furyl)-1-ethanone
1192-62-7

1-(2-furyl)-1-ethanone

C

5-hydroxymethyl-2-furfuraldehyde
67-47-0

5-hydroxymethyl-2-furfuraldehyde

D

Maltol
118-71-8

Maltol

E

D-Fructose
57-48-7

D-Fructose

F

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

G

D-glucose
50-99-7

D-glucose

K

1-deoxymaltosone

1-deoxymaltosone

L

3-deoxymaltosone

3-deoxymaltosone

M

3-deoxypentos-2-ulose

3-deoxypentos-2-ulose

N

1,4-dideoxyhexosulose

1,4-dideoxyhexosulose

Conditions
ConditionsYield
With L-alanin In water at 130℃; for 5h; pH=5.0; Time; Sealed tube;
D-maltose
69-79-4

D-maltose

A

furfural
98-01-1

furfural

B

1-(2-furyl)-1-ethanone
1192-62-7

1-(2-furyl)-1-ethanone

C

5-hydroxymethyl-2-furfuraldehyde
67-47-0

5-hydroxymethyl-2-furfuraldehyde

D

Maltol
118-71-8

Maltol

E

isomaltol
3420-59-5

isomaltol

F

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

G

D-glucose
50-99-7

D-glucose

J

1-deoxymaltosone

1-deoxymaltosone

K

3-deoxymaltosone

3-deoxymaltosone

L

1-deoxy-2,3-D-erythro-hexo-2,3-diulose

1-deoxy-2,3-D-erythro-hexo-2,3-diulose

M

3-deoxypentos-2-ulose

3-deoxypentos-2-ulose

N

1,4-dideoxyhexosulose

1,4-dideoxyhexosulose

Conditions
ConditionsYield
With L-lysine In water at 130℃; for 5h; pH=5.0; Sealed tube;
D-maltose
69-79-4

D-maltose

A

furfural
98-01-1

furfural

B

1-(2-furyl)-1-ethanone
1192-62-7

1-(2-furyl)-1-ethanone

C

5-hydroxymethyl-2-furfuraldehyde
67-47-0

5-hydroxymethyl-2-furfuraldehyde

D

Maltol
118-71-8

Maltol

E

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

F

D-glucose
50-99-7

D-glucose

I

1-deoxymaltosone

1-deoxymaltosone

J

3-deoxymaltosone

3-deoxymaltosone

K

3-deoxypentos-2-ulose

3-deoxypentos-2-ulose

Conditions
ConditionsYield
With L-proline In water at 130℃; for 5h; pH=5.0; Sealed tube;
D-glucose
50-99-7

D-glucose

A

furfural
98-01-1

furfural

B

5-hydroxymethyl-2-furfuraldehyde
67-47-0

5-hydroxymethyl-2-furfuraldehyde

C

D-Fructose
57-48-7

D-Fructose

D

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

H

1-deoxy-2,3-D-erythro-hexo-2,3-diulose

1-deoxy-2,3-D-erythro-hexo-2,3-diulose

I

3-deoxypentos-2-ulose

3-deoxypentos-2-ulose

J

1,4-dideoxyhexosulose

1,4-dideoxyhexosulose

Conditions
ConditionsYield
With L-alanin In water at 130℃; for 5h; pH=5.0; Time; Sealed tube;A n/a
B n/a
C Ca. 5 %Chromat.
D n/a
E n/a
F n/a
G n/a
H n/a
I n/a
J n/a
2-methyl-4-oxo-4H-pyran-3-yl acetate
28787-36-2

2-methyl-4-oxo-4H-pyran-3-yl acetate

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1.1: palladium on activated charcoal; hydrogen / ethyl acetate / 8 h / 760.05 Torr
2.1: lithium diisopropyl amide / tetrahydrofuran / 0.5 h / -70 °C
2.2: 0.5 h
3.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 6 h / 20 °C
3.2: 0.5 h
4.1: sodium methylate; methanol / 10 h / 20 °C
View Scheme
Maltol
118-71-8

Maltol

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1.1: ethanol / 6 h / 100 °C
2.1: palladium on activated charcoal; hydrogen / ethyl acetate / 8 h / 760.05 Torr
3.1: lithium diisopropyl amide / tetrahydrofuran / 0.5 h / -70 °C
3.2: 0.5 h
4.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 6 h / 20 °C
4.2: 0.5 h
5.1: sodium methylate; methanol / 10 h / 20 °C
View Scheme
dihydromaltol acetate
38877-20-2

dihydromaltol acetate

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: lithium diisopropyl amide / tetrahydrofuran / 0.5 h / -70 °C
1.2: 0.5 h
2.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 6 h / 20 °C
2.2: 0.5 h
3.1: sodium methylate; methanol / 10 h / 20 °C
View Scheme
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

di-tert-butyl dicarbonate
24424-99-5

di-tert-butyl dicarbonate

DDMP-5-BoC

DDMP-5-BoC

Conditions
ConditionsYield
With dmap; triethylamine In dichloromethane at 20℃; for 3h;95%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

propionic acid anhydride
123-62-6

propionic acid anhydride

2,3-dihydro-3-hydroxy-5-propionyloxy-6-methyl-4H-pyran-4-one

2,3-dihydro-3-hydroxy-5-propionyloxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With triethylamine In acetonitrile at -5 - 20℃; for 8h; Inert atmosphere;94.75%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

isopentanoyl chloride
108-12-3

isopentanoyl chloride

2,3-dihydro-3-hydroxy-5-isovaleryloxy-6-methyl-4H-pyran-4-one

2,3-dihydro-3-hydroxy-5-isovaleryloxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With N,N-diisopropylmethylamine In chloroform at 0 - 20℃; for 6h; Inert atmosphere;94.51%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

Cinnamoyl chloride
102-92-1

Cinnamoyl chloride

C15H14O5

C15H14O5

Conditions
ConditionsYield
With N,N-diisopropylmethylamine In chloroform at 0 - 20℃; for 6h; Inert atmosphere;94.51%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

isobutyryl chloride
79-30-1

isobutyryl chloride

2,3-dihydro-3-hydroxy-5-isobutyryloxy-6-methyl-4H-pyran-4-one

2,3-dihydro-3-hydroxy-5-isobutyryloxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With triethylamine In dichloromethane at 0 - 20℃; for 6h; Inert atmosphere;94.39%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

n-hexadecanoyl chloride
112-67-4

n-hexadecanoyl chloride

C22H38O5

C22H38O5

Conditions
ConditionsYield
With triethylamine In dichloromethane at 0 - 20℃; for 6h; Inert atmosphere;94.39%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

acetic anhydride
108-24-7

acetic anhydride

2,3-dihydro-3-hydroxy-5-acetoxy-6-methyl-4H-pyran-4-one

2,3-dihydro-3-hydroxy-5-acetoxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With pyridine In toluene at -5 - 20℃; for 8h; Inert atmosphere;94.35%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

2-Methoxybenzoyl chloride
21615-34-9

2-Methoxybenzoyl chloride

2,3-dihydro-(3,5-di(o-methoxybenzoyloxy))-6-methyl-4H-pyran-4-one

2,3-dihydro-(3,5-di(o-methoxybenzoyloxy))-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With triethylamine In chloroform at 0 - 20℃; for 10h; Inert atmosphere;94.3%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

phenylacetyl chloride
103-80-0

phenylacetyl chloride

2,3-dihydro-(3,5-di(phenylacetoxy))-6-methyl-4H-pyran-4-one

2,3-dihydro-(3,5-di(phenylacetoxy))-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With triethylamine In chloroform at 0 - 20℃; for 10h; Inert atmosphere;93.29%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

acetyl chloride
75-36-5

acetyl chloride

2,3-dihydro-3-hydroxy-5-acetoxy-6-methyl-4H-pyran-4-one

2,3-dihydro-3-hydroxy-5-acetoxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With triethylamine In dichloromethane at 0 - 20℃; for 6h; Inert atmosphere;93.28%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

benzoyl chloride
98-88-4

benzoyl chloride

2,3-dihydro-3,5-dibenzoyloxy-6-methyl-4H-pyran-4-one

2,3-dihydro-3,5-dibenzoyloxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With triethylamine In dichloromethane at 0 - 20℃; for 6h; Inert atmosphere;92.33%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

2-Methylpropionic anhydride
97-72-3

2-Methylpropionic anhydride

2,3-dihydro-3-hydroxy-5-isobutyryloxy-6-methyl-4H-pyran-4-one

2,3-dihydro-3-hydroxy-5-isobutyryloxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With pyridine In toluene at 5 - 20℃; for 8h; Inert atmosphere;92.29%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

palmitic anhydride
623-65-4

palmitic anhydride

C22H38O5

C22H38O5

Conditions
ConditionsYield
With pyridine In toluene at -5 - 20℃; for 8h; Inert atmosphere;92.29%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

3-Methylbenzoyl chloride
1711-06-4

3-Methylbenzoyl chloride

2,3-dihydro-(3,5-di(m-methylbenzoyloxy))-6-methyl-4H-pyran-4-one

2,3-dihydro-(3,5-di(m-methylbenzoyloxy))-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With N,N-diisopropylmethylamine In chloroform at 0 - 20℃; for 8h; Inert atmosphere;92.24%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

propionyl chloride
79-03-8

propionyl chloride

2,3-dihydro-3-hydroxy-5-propionyloxy-6-methyl-4H-pyran-4-one

2,3-dihydro-3-hydroxy-5-propionyloxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With N,N-diisopropylmethylamine In chloroform at 0 - 20℃; for 6h; Inert atmosphere;91.5%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

Isovaleric anhydride
1468-39-9

Isovaleric anhydride

2,3-dihydro-3-hydroxy-5-isovaleryloxy-6-methyl-4H-pyran-4-one

2,3-dihydro-3-hydroxy-5-isovaleryloxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With triethylamine In acetonitrile at -5 - 20℃; for 8h; Inert atmosphere;91.45%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

cinnamic anhydride
21947-71-7

cinnamic anhydride

C15H14O5

C15H14O5

Conditions
ConditionsYield
With triethylamine In acetonitrile at -5 - 20℃; for 8h; Inert atmosphere;91.45%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

benzyl chloroformate
501-53-1

benzyl chloroformate

benzyl 3-hydroxy-6-methyl-4-oxo-2,3-dihydro-4H-pyran-5-yl carbonate

benzyl 3-hydroxy-6-methyl-4-oxo-2,3-dihydro-4H-pyran-5-yl carbonate

Conditions
ConditionsYield
With triethylamine In dichloromethane at 0 - 25℃; for 6h; Solvent; Reagent/catalyst; Inert atmosphere;91%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

isobutyryl chloride
79-30-1

isobutyryl chloride

2,3-dihydro-3,5-diisobutyryloxy-6-methyl-4H-pyran-4-one

2,3-dihydro-3,5-diisobutyryloxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With triethylamine In dichloromethane at 0 - 20℃; for 6h; Inert atmosphere;90.85%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

acetyl chloride
75-36-5

acetyl chloride

2,3-dihydro-3,5-diacetoxy-6-methyl-4H-pyran-4-one

2,3-dihydro-3,5-diacetoxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With triethylamine In dichloromethane at 0 - 20℃; for 6h; Inert atmosphere;89.69%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

n-valeryl chloride
638-29-9

n-valeryl chloride

2,3-dihydro-3,5-dipentanoyloxy-6-methyl-4H-pyran-4-one

2,3-dihydro-3,5-dipentanoyloxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With N,N-diisopropylmethylamine In chloroform at 0 - 20℃; for 6h; Inert atmosphere;88.94%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

isopentanoyl chloride
108-12-3

isopentanoyl chloride

2,3-dihydro-3,5-diisovaleryloxy-6-methyl-4H-pyran-4-one

2,3-dihydro-3,5-diisovaleryloxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With triethylamine In chloroform at 0 - 20℃; for 6h;88.78%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

benzoic acid anhydride
93-97-0

benzoic acid anhydride

2,3-dihydro-3,5-dibenzoyloxy-6-methyl-4H-pyran-4-one

2,3-dihydro-3,5-dibenzoyloxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With pyridine In toluene at -5 - 20℃; for 8h; Inert atmosphere;88.49%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

Cinnamoyl chloride
102-92-1

Cinnamoyl chloride

2,3-dihydro-(3,5-di(cinnamoyloxy))-6-methyl-4H-pyran-4-one

2,3-dihydro-(3,5-di(cinnamoyloxy))-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With triethylamine In chloroform at -5 - 20℃; for 10h; Inert atmosphere;87.6%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

acetic anhydride
108-24-7

acetic anhydride

2,3-dihydro-3,5-diacetoxy-6-methyl-4H-pyran-4-one

2,3-dihydro-3,5-diacetoxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With pyridine In toluene at -5 - 20℃; for 8h; Inert atmosphere;87.28%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

propionyl chloride
79-03-8

propionyl chloride

2,3-dihydro-3,5-dipropionyloxy-6-methyl-4H-pyran-4-one

2,3-dihydro-3,5-dipropionyloxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With N,N-diisopropylmethylamine In chloroform at 0 - 20℃; for 6h; Inert atmosphere;87.11%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

2-Methylpropionic anhydride
97-72-3

2-Methylpropionic anhydride

2,3-dihydro-3,5-diisobutyryloxy-6-methyl-4H-pyran-4-one

2,3-dihydro-3,5-diisobutyryloxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With pyridine In toluene at -5 - 20℃; for 8h; Inert atmosphere;86.44%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

propionic acid anhydride
123-62-6

propionic acid anhydride

2,3-dihydro-3,5-dipropionyloxy-6-methyl-4H-pyran-4-one

2,3-dihydro-3,5-dipropionyloxy-6-methyl-4H-pyran-4-one

Conditions
ConditionsYield
With triethylamine In acetonitrile at -5 - 20℃; for 8h; Inert atmosphere;84.96%
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
28564-83-2

2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one

2-phenylethyl chloroformate
57913-41-4

2-phenylethyl chloroformate

3-hydroxy-6-methyl-4-oxo-3,4-dihydro-2H-pyran-5-yl 2-phenylethyl carbonate

3-hydroxy-6-methyl-4-oxo-3,4-dihydro-2H-pyran-5-yl 2-phenylethyl carbonate

Conditions
ConditionsYield
With sodium hydroxide In dichloromethane at 60℃; for 6h; Solvent; Reagent/catalyst; Temperature; Inert atmosphere;84.9%
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