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inquiry1.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
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inquiry2,3-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
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inquiryHello, 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
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inquiryHenan 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
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inquiryZibo 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
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inquirySuperior 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
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inquiryOur 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
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inquiryShandong 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
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inquiryGOLDEN 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
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inquiryWe 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
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inquiryLower 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
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inquiryJ&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
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inquiryAnsciep 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
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inquiry2,3-Dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one Application:2,3-Dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
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inquiry4H-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
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inquiry2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
Conditions | Yield |
---|---|
With methanol; sodium methylate at 20℃; for 10h; | 97.22% |
piperidine
A
4-hydroxy-2-(hydroxymethyl)-5-methyl-3(2H)-furanone
B
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
C
piperidino-hexose-reductone
Conditions | Yield |
---|---|
In ethanol; water; acetic acid at 75℃; for 20h; Heating; | A 21% B 8.8% C 20% |
D-Galactose
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
Conditions | Yield |
---|---|
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
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
Conditions | Yield |
---|---|
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
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
Conditions | Yield |
---|---|
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
2,2-dimethylpropylamine
A
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
B
2-acetyl-neopentylpyrrole
C
2-(2-hydroxyacetyl)-1-neopentylpyrrole
D
5-hydroxymethyl-1-neopentylpyrrole-2-carbaldehyde
Conditions | Yield |
---|---|
10 days of incubation under physiological pH and temperature; Yield given. Yields of byproduct given; |
1-deoxy-1-(N-methylanilino)-D-fructose
A
(2-furyl)methyl alcohol
B
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
C
ethanol
D
acetic acid
E
N-methyl-N-phenylformamide
F
N-methylaniline
Conditions | Yield |
---|---|
at 250℃; for 0.25h; Product distribution; |
1-deoxy-1-dibenzylamino-D-fructose
A
1-benzyl-1H-pyrrole
B
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
C
N-methyldibenzylamine
D
benzaldehyde
E
acetic acid
F
dibenzylamine
Conditions | Yield |
---|---|
at 250℃; for 0.25h; Product distribution; |
D-glucose
glycine
A
(2-furyl)methyl alcohol
B
2,5-Dimethylpyrrole
C
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
D
2-Acetylpyrrole
E
acetic acid
F
propionic acid
Conditions | Yield |
---|---|
In water at 95℃; for 2h; Product distribution; other reaction time, other temperature; |
3-amino propanoic acid
A
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
B
2,3-Dihydro-3,4-dihydroxy-5-acetylfuran
Conditions | Yield |
---|---|
at 150℃; for 0.0333333h; | A n/a B 0.5 mg |
D-Glucose
A
(2-furyl)methyl alcohol
B
formyl-2 methyl-5 pyrrole
C
5-hydroxymethyl-2-furfuraldehyde
D
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
E
2-Acetylpyrrole
Conditions | Yield |
---|---|
With L-Lysine hydrochloride; sodium hydrogencarbonate In water at 75℃; for 24h; Product distribution; pH 6.5; other times; |
A
3-(1'-pyrrolidinyl)-2-butanone
B
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
C
1-(pyrrolidin-1-yl)butan-1-one
D
1-(1'-pyrrolidinyl)-2-propanone
E
1-(1'-pyrrolidinyl)-2-butanone
Conditions | Yield |
---|---|
at 250℃; for 0.00555556h; Product distribution; var. temp., var. time, also D-glucose/proline; |
alpha-D-glucopyranose
acetic acid
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
Conditions | Yield |
---|---|
With piperidine 1.) C2H5OH, reflux, 1.5 h, 2.) C2H5OH, 90 deg C, 22 h; Yield given. Multistep reaction; |
A
morpholine
B
3-morpholinoacetone
C
1,2-(N'N'-dimorpholino)-1-propene
D
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
E
acetic acid
Conditions | Yield |
---|---|
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. |
A
5-hydroxymethyl-2-furfuraldehyde
B
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
Conditions | Yield |
---|---|
With potassium disulphite Mechanism; Irradiation; degradation in watermelon bait; |
D-Glucose
glycine
A
5-hydroxymethyl-2-furfuraldehyde
B
4-hydroxy-2-(hydroxymethyl)-5-methyl-3(2H)-furanone
C
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
Conditions | Yield |
---|---|
In water for 2h; Heating; pH 5; |
D-glucose
A
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
B
5-hydroxymaltol
Conditions | Yield |
---|---|
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
A
4-hydroxy-2-(hydroxymethyl)-5-methyl-3(2H)-furanone
B
furaneol
C
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
Conditions | Yield |
---|---|
With glycine In water for 4h; Maillard reaction; Heating; | A n/a B n/a C 7.1 mg |
D-Glucose
A
furaneol
B
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
C
4-hydroxy-5-methyl-3[2H]-furanone
Conditions | Yield |
---|---|
In phosphate buffer; water at 37℃; for 2191.5h; pH=7.4; Maillard reaction; |
A
LACTIC ACID
B
4-hydroxy-2-(hydroxymethyl)-5-methyl-3(2H)-furanone
C
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
D
D-erythrulose
E
D-glyceric acid
F
1-hydroxy-butane-2,3-dione
G
3,4-dihydroxy-2-oxobutanal
H
4-hydroxy-2-oxobutanal
I
acetic acid
J
hydroxy-2-propanone
Conditions | Yield |
---|---|
With L-alanin; diethylenetriaminopentaacetic acid at 37℃; Mechanism; Kinetics; Temperature; Reagent/catalyst; Maillard reaction; aq. phosphate buffer; Inert atmosphere; |
A
LACTIC ACID
B
4-hydroxy-2-(hydroxymethyl)-5-methyl-3(2H)-furanone
C
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
D
erythrulose
E
glyceric acid
F
acetaldehyde
G
Glycolaldehyde
H
Glyceraldehyde
Conditions | Yield |
---|---|
With L-alanin at 50℃; for 48h; pH=7.4; aq. phosphate buffer; in air; |
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
Conditions | Yield |
---|---|
Stage #1: D-glucose With piperidine In ethanol Reflux; Inert atmosphere; Stage #2: With acetic acid In ethanol Heating; Inert atmosphere; |
D-maltose
A
furfural
B
1-(2-furyl)-1-ethanone
C
5-hydroxymethyl-2-furfuraldehyde
D
Maltol
E
D-Fructose
F
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
G
D-glucose
I
3-deoxygalactosone
J
3-deoxyglucosone
Conditions | Yield |
---|---|
With L-alanin In water at 130℃; for 5h; pH=5.0; Time; Sealed tube; |
D-maltose
A
furfural
B
1-(2-furyl)-1-ethanone
C
5-hydroxymethyl-2-furfuraldehyde
D
Maltol
E
isomaltol
F
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
G
D-glucose
H
3-deoxygalactosone
I
3-deoxyglucosone
Conditions | Yield |
---|---|
With L-lysine In water at 130℃; for 5h; pH=5.0; Sealed tube; |
D-maltose
A
furfural
B
1-(2-furyl)-1-ethanone
C
5-hydroxymethyl-2-furfuraldehyde
D
Maltol
E
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
F
D-glucose
G
3-deoxygalactosone
H
3-deoxyglucosone
Conditions | Yield |
---|---|
With L-proline In water at 130℃; for 5h; pH=5.0; Sealed tube; |
D-glucose
A
furfural
B
5-hydroxymethyl-2-furfuraldehyde
C
D-Fructose
D
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
F
3-deoxygalactosone
G
3-deoxyglucosone
Conditions | Yield |
---|---|
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
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
Conditions | Yield |
---|---|
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
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
Conditions | Yield |
---|---|
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
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
Conditions | Yield |
---|---|
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
di-tert-butyl dicarbonate
Conditions | Yield |
---|---|
With dmap; triethylamine In dichloromethane at 20℃; for 3h; | 95% |
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
propionic acid anhydride
Conditions | Yield |
---|---|
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
isopentanoyl chloride
Conditions | Yield |
---|---|
With N,N-diisopropylmethylamine In chloroform at 0 - 20℃; for 6h; Inert atmosphere; | 94.51% |
Conditions | Yield |
---|---|
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
isobutyryl chloride
Conditions | Yield |
---|---|
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
n-hexadecanoyl chloride
Conditions | Yield |
---|---|
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
acetic anhydride
Conditions | Yield |
---|---|
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
2-Methoxybenzoyl chloride
Conditions | Yield |
---|---|
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
phenylacetyl chloride
Conditions | Yield |
---|---|
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
acetyl chloride
Conditions | Yield |
---|---|
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
benzoyl chloride
Conditions | Yield |
---|---|
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
2-Methylpropionic anhydride
Conditions | Yield |
---|---|
With pyridine In toluene at 5 - 20℃; for 8h; Inert atmosphere; | 92.29% |
Conditions | Yield |
---|---|
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
3-Methylbenzoyl chloride
Conditions | Yield |
---|---|
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
propionyl chloride
Conditions | Yield |
---|---|
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
Isovaleric anhydride
Conditions | Yield |
---|---|
With triethylamine In acetonitrile at -5 - 20℃; for 8h; Inert atmosphere; | 91.45% |
Conditions | Yield |
---|---|
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
benzyl chloroformate
Conditions | Yield |
---|---|
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
isobutyryl chloride
Conditions | Yield |
---|---|
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
acetyl chloride
Conditions | Yield |
---|---|
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
n-valeryl chloride
Conditions | Yield |
---|---|
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
isopentanoyl chloride
Conditions | Yield |
---|---|
With triethylamine In chloroform at 0 - 20℃; for 6h; | 88.78% |
2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one
benzoic acid anhydride
Conditions | Yield |
---|---|
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
Cinnamoyl chloride
Conditions | Yield |
---|---|
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
acetic anhydride
Conditions | Yield |
---|---|
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
propionyl chloride
Conditions | Yield |
---|---|
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
2-Methylpropionic anhydride
Conditions | Yield |
---|---|
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
propionic acid anhydride
Conditions | Yield |
---|---|
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
2-phenylethyl chloroformate
Conditions | Yield |
---|---|
With sodium hydroxide In dichloromethane at 60℃; for 6h; Solvent; Reagent/catalyst; Temperature; Inert atmosphere; | 84.9% |
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