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Hefei TNJ chemical industry co.,ltd

ISO We have exported this item to many countries many times so we have rich experience for it. Appearance:Colorless transparent liquid ,Have a similar ester smell Storage:Keep in cool place Package:240kg/drum Application:Synthesis of vitamin B im

High quality 2-Acetylbutyrolactone

Cas:517-23-7

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

inquiry

Hangzhou Dingyan Chem Co., Ltd

Items Standard Result Assay 99.0%min 99.16% Appearance Colorless transparent liquid

Top purity 2-Acetylbutyrolactone with high quality and best price cas:517-23-7

Cas:517-23-7

Min.Order:1 Kilogram

FOB Price: $5.0 / 30.0

Type:Manufacturers

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Jinan Finer Chemical Co., Ltd

Product description: Product name 2-Acetylbutyrolactone CAS number 517-23-7 Assay ≥99% Appearance Transparent to slightly yellow liquid Capacity 200mt/year Application Pharma

2-Acetylbutyrolactone

Cas:517-23-7

Min.Order:10 Gram

FOB Price: $12.0

Type:Lab/Research institutions

inquiry

Henan Allgreen Chemical Co.,Ltd

he company has advanced technology, as well as a large number of excellent R & D team, to provide customers from the grams to one hundred kilograms and tons of high-quality products, competitive prices and quality se T rvice Appearance:White or

alpha-Acetyl-gaMMa-butyrolactone

Cas:517-23-7

Min.Order:1 Kilogram

Negotiable

Type:Manufacturers

inquiry

Ality Chemical Corporation

The above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi

Factory Supply α-acetyl-γ-butyrolactone

Cas:517-23-7

Min.Order:1

Negotiable

Type:Other

inquiry

Xi'an Xszo Chem Co., Ltd.

1. Factory price and high quality must be guaranteed, base on 8 years of production and R&D experience2. Free samples will be provided,ensure specifications and quality are right for customer3. Customers will receive the most professional technical s

High Quality 99% 2(3H)-Furanone,3-acetyldihydro- 517-23-7 ISO Producer

Cas:517-23-7

Min.Order:1 Gram

FOB Price: $0.1

Type:Manufacturers

inquiry

COLORCOM LTD.

Colorcom is a global leader in industrial chemical manufacturing and is continuously innovating and transforming to exceed client expectations and industry standards. Colorcom prides itself on superior customer and technical focus, while focusing on

2-Acetylbutyrolactone

Cas:517-23-7

Min.Order:1 Metric Ton

Negotiable

Type:Manufacturers

inquiry

EAST CHEMSOURCES LIMITED

2-Acetylbutyrolactone Alias: ABL Use: Mainly used in the synthesis of vitamin B1 CAS No: 517-23-7 Molecular Structure:

2-Acetylbutyrolactone

Cas:517-23-7

Min.Order:1 Kilogram

FOB Price: $2.0 / 3.0

Type:Manufacturers

inquiry

Dayang Chem (Hangzhou) Co.,Ltd.

As a leading manufacturer and supplier of chemicals in China, DayangChem not only supply popular chemicals, but also DayangChem’s R&D center offer custom synthesis according to the contract research and development services for t

High purity 2-Acetylbutyrolactone 98% TOP1 supplier in China

Cas:517-23-7

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

inquiry

Chemwill Asia Co., Ltd.

Our main production base is located in Xuzhou industry park. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place.Our R&D team masters core technology for process-design of target building block

α-Acetyl-τ-butyrolactone

Cas:517-23-7

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

inquiry

Hebei yanxi chemical co.,LTD.

Hebei yanxi chemical co. LTD. has expanded a compositive entity from initially only as a small manufacturer. The company dedicated to the development, production and marketing of chemicals. Main products are Titanium dioxide(CAS13463-67-7). Lead a

a-Acetobutyrolactone

Cas:517-23-7

Min.Order:1000 Kilogram

FOB Price: $1.0

Type:Trading Company

inquiry

Henan Tianfu Chemical Co., Ltd.

TIANFUCHEM--517-23-7--2-Acetylbutyrolactone factory price Our company was built in 2009 with an ISO certificate.In the past 10 years, we have grown up as a famous fine chemicals supplier in China And we had established stable business r

TIANFUCHEM--517-23-7--2-Acetylbutyrolactone factory price

Cas:517-23-7

Min.Order:1 Metric Ton

FOB Price: $2000.0

Type:Lab/Research institutions

inquiry

Hebei Nengqian Chemical Import and Export Co., LTD

Our advantages: 1, High quality with competitive price: 1) Standard:BP/USP/EP/Enterprise standard 2) All Purity≥99% 3) We are manufacturer and can provide high quality products with factory price. 2, Fast and safe delivery 1) Parcel can be

2-Acetylbutyrolactone cas 517-23-7

Cas:517-23-7

Min.Order:1 Kilogram

FOB Price: $48.0 / 58.0

Type:Trading Company

inquiry

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 517-23-7 with best quality

Cas:517-23-7

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

inquiry

Hebei Sankai Chemical Technology Co., Ltd

1. Product advantages ♦ High purity, all above 98.5%, no impurities after the dissolution ♦ We will test each batch to ensure quality ♦ OEM and private brand services designed for free ♦ Various cap colors available &diam

2-Acetylbutyrolactone CAS517-23-7

Cas:517-23-7

Min.Order:1 Kilogram

FOB Price: $7.0 / 10.0

Type:Trading Company

inquiry

Henan Wentao Chemical Product Co., Ltd.

We are leading fine chemicals supplier in China with ISO certificate, Our main business covers the fields below: 1.Noble Metal Catalysts (Pt.Pd...) 2.Organic Phosphine Ligands (Tert-butyl-phosphine.Cyclohexyl-phosphine...) 3.OLED

2(3H)-Furanone,3-acetyldihydro-CAS NO.: 517-23-7

Cas:517-23-7

Min.Order:1 Gram

FOB Price: $3.0

Type:Lab/Research institutions

inquiry

Hubei Langyou International Trading Co., Ltd

1. Guaranteed purity; 2. Large quantity in stock; 3. Largest manufacturer; 4. Best service after shipment with email; 5. High quality & competitive price; Appearance:Colorless liquid Storage:Store in sealed containers at cool

Factory supplier 2-Acetylbutyrolactone 517-23-7

Cas:517-23-7

Min.Order:100 Gram

Negotiable

Type:Other

inquiry

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

2(3H)-Furanone,3-acetyldihydro- 517-23-7

Cas:517-23-7

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Shanghai Minstar Chemical Co., Ltd

2-Acetylbutyrolactone Basic information Description Reference Product Name: 2-Acetylbutyrolactone Synonyms: -(-2-Hydroxyethyl)acetoaceticacid-lactone;2-Acetyl-4-hydroxybutyric acid gamma-lactone;2-Acetylbutyrolacton;2-Oxo-3-acetyltetrahydrofura

2-Acetylbutyrolactone

Cas:517-23-7

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Baoji Guokang Healthchem co.,ltd

Our company has been in existence for 10 years since its establishment. We have our own unique team. The company integrates independent research and development, production and sales. We have established famous brands at home and abroad. At prese

Animal Pharmaceuticals, 2-Acetylbutyrolactone CAS:517-23-7

Cas:517-23-7

Min.Order:1 Kilogram

FOB Price: $21.4 / 24.6

Type:Trading Company

inquiry

Qingdao Beluga Import and Export Co., LTD

2-Acetylbutyrolactone CAS:517-23-7 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specializing in high quality organic inter

2-Acetylbutyrolactone CAS:517-23-7

Cas:517-23-7

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

2(3H)-Furanone,3-acetyldihydro-

Cas:517-23-7

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Wuhan Wonda Pharm Limited

1.high quality: quality is life. quality is the most important element for all goods. we have a lab doing research in wuhan china. hplc and nmr is available if needed. 2.reasonable price: we provide high quality products with competi

2-Acetylbutyrolactone (ABL)

Cas:517-23-7

Min.Order:10 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Shanxi Ankesi Biotechnology Co., Ltd

Our Advantage 1. Rich experience We specialize in this filed for many years, our APIs exported to all over the world and and we established long friendly relations of cooperation with our clients. 2. Great quality,purity and favorable Good qual

Premium manufacturer supply high end 2-Acetylbutyrolactone CAS 517-23-7

Cas:517-23-7

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

inquiry

Hubei Jiutian Bio-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 qualifie

2-Acetylbutyrolactone cas 517-23-7

Cas:517-23-7

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou Keyingchem Co.,Ltd

Hangzhou KeyingChem Co., Ltd. exported this product to many countries and regions at best price. If you are looking for the material’s manufacturer or supplier in China, KeyingChem is your best choice. Pls contact with us freely for getting det

2-Acetylbutyrolactone

Cas:517-23-7

Min.Order:0 Metric Ton

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou J&H Chemical Co., Ltd.

J&H CHEM 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. J&H CHEM has some Manufacturing base in Jia

2-Acetylbutyrolactone

Cas:517-23-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Chemlyte Solutions

Chemlyte Solutions believe that customers and suppliers deserve much more than what traditional distributors can offer. To grow in today s fast-paced and increasingly competitive market it is essential to be able to quickly adapt to market forces eff

Featured products 2-Acetylbutyrolactone

Cas:517-23-7

Min.Order:100 Gram

Negotiable

Type:Other

inquiry

Shanghai Massive Chemical Technology Co., Ltd.

Massive Chemical is certified with ISO9001 and ISO14001 manufacturer for this product. We will offer all documents as requirement for the materials which includes, Certificate of Analysis, Material Safety Data Sheet, and Method of Analysis and

2-Acetylbutyrolactone

Cas:517-23-7

Min.Order:1 Gram

FOB Price: $1.0

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

High quality 2-Acetylbutyrolactone

Cas:517-23-7

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

inquiry

Synthetic route

α-acetyl-γ-butyrolactone sodium

α-acetyl-γ-butyrolactone sodium

A

acetamide
60-35-5

acetamide

B

3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

Conditions
ConditionsYield
With ethyl hydrazine hydrochloride In methanol at 10 - 20℃; for 2h; Temperature;A 98.9%
B 98.29%
4-butanolide
96-48-0

4-butanolide

acetic acid methyl ester
79-20-9

acetic acid methyl ester

3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

Conditions
ConditionsYield
Stage #1: 4-butanolide; acetic acid methyl ester With sodium methylate In methanol at 45 - 90℃; under 750.075 Torr; for 10h; Inert atmosphere; Large scale;
Stage #2: With carbon dioxide In methanol; water at 0 - 35℃; under 6000.6 Torr; for 0.5h; Temperature; Pressure; Reagent/catalyst; Large scale;
96%
4-butanolide
96-48-0

4-butanolide

ethyl acetate
141-78-6

ethyl acetate

3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

Conditions
ConditionsYield
With sodium ethanolate at 75℃; for 10h; Reflux;93%
Stage #1: 4-butanolide; ethyl acetate With sodium methylate at 50 - 100℃; for 5h; Autoclave;
Stage #2: With sulfuric acid at -5 - 5℃; for 5h; pH=6 - 7;
83%
With sodium at 80℃; for 8h; Mechanism;
4-butanolide
96-48-0

4-butanolide

acetaldehyde
75-07-0

acetaldehyde

3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

Conditions
ConditionsYield
With sodium hydrogencarbonate In ethyl acetate at 60 - 95℃; under 750.075 - 7500.75 Torr; for 3.5h; Solvent; Temperature; Reagent/catalyst; Autoclave;79.31%
oxirane
75-21-8

oxirane

acetoacetic acid methyl ester
105-45-3

acetoacetic acid methyl ester

3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

Conditions
ConditionsYield
With sodium hydroxide In ethanol; water at -5 - 0℃; for 50h;78%
With triethylamine In methanol at 5 - 95℃; under 1500.15 - 2250.23 Torr; for 2.15 - 5h; Product distribution / selectivity;40.4%
With N,N,N',N'-tetramethylguanidine In methanol at 5 - 65℃; under 1500.15 - 2250.23 Torr; for 1.15 - 6.18333h; Product distribution / selectivity;30.8%
4-butanolide
96-48-0

4-butanolide

acetic anhydride
108-24-7

acetic anhydride

3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

Conditions
ConditionsYield
Stage #1: 4-butanolide With lithium hexamethyldisilazane In tetrahydrofuran at -78℃; for 0.25h; Inert atmosphere;
Stage #2: acetic anhydride In tetrahydrofuran at -78℃; for 1h; Inert atmosphere;
42%
oxirane
75-21-8

oxirane

ethanol
64-17-5

ethanol

sodium ethyl acetylacetate enolate
1007476-32-5

sodium ethyl acetylacetate enolate

3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

oxirane
75-21-8

oxirane

sodium ethyl acetylacetate enolate
1007476-32-5

sodium ethyl acetylacetate enolate

3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

Conditions
ConditionsYield
With ethanol
ethanol
64-17-5

ethanol

sodium ethyl acetylacetate enolate
1007476-32-5

sodium ethyl acetylacetate enolate

2-chloro-ethanol
107-07-3

2-chloro-ethanol

3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

oxirane
75-21-8

oxirane

ethyl acetoacetate
141-97-9

ethyl acetoacetate

3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

Conditions
ConditionsYield
With sodium hydroxide 1.) water, EtOH, 0 deg C, 30 min, 2.) 0 - 5 deg C, 72 h; Yield given. Multistep reaction;
With sodium hydroxide; sulfuric acid In water; ethylene glycol
4-butanolide
96-48-0

4-butanolide

sodium ethanolate
141-52-6

sodium ethanolate

ethyl acetate
141-78-6

ethyl acetate

A

3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

B

5-Hydroxy-2-pentanone
1071-73-4

5-Hydroxy-2-pentanone

C

ethyl 4-hydroxybutanoate
999-10-0

ethyl 4-hydroxybutanoate

D

ethyl 4-(acetyloxy)butanoate
25560-91-2

ethyl 4-(acetyloxy)butanoate

E

ethyl acetoacetate
141-97-9

ethyl acetoacetate

F

α-(2-Tetrahydrofuranylidene)-γ-butyrolactone
65652-24-6

α-(2-Tetrahydrofuranylidene)-γ-butyrolactone

Conditions
ConditionsYield
at 100℃; under 1064 Torr; for 0.5h; Product distribution; various molar ratio of the reagents, other temp., other pressure, other time;
4-butanolide
96-48-0

4-butanolide

acetyl chloride
75-36-5

acetyl chloride

3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

Conditions
ConditionsYield
With 18-crown-6 ether 1.) THF, RT, 15 min, 2.) THF, RT, 3 h; Yield given. Multistep reaction;
3-<1-(N-phenylamino)-ethylidene>-4,5-dihydro-2(3H)-furanone
64620-59-3

3-<1-(N-phenylamino)-ethylidene>-4,5-dihydro-2(3H)-furanone

A

3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

B

aniline
62-53-3

aniline

Conditions
ConditionsYield
With water at 25℃; Rate constant; Mechanism;
D-Glucose
2280-44-6

D-Glucose

3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

Conditions
ConditionsYield
With aluminium trichloride; Trioxane In methanol Dehydration; Heating;
4-butanolide
96-48-0

4-butanolide

ethyl acetate
141-78-6

ethyl acetate

A

3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

B

acetoacetic acid ethyl ester and tetrahydro-<2,3'>bifuryliden-2'-one

acetoacetic acid ethyl ester and tetrahydro-<2,3'>bifuryliden-2'-one

Conditions
ConditionsYield
With sodium
hydrogenchloride
7647-01-0

hydrogenchloride

2-acetyl-2-(methylsulfanyl-methyl)-succinic acid diethyl ester
412012-07-8

2-acetyl-2-(methylsulfanyl-methyl)-succinic acid diethyl ester

A

3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

B

3-methylene-4-oxopentanoic acid
89533-75-5

3-methylene-4-oxopentanoic acid

C

3--4-oxo-valeric acid

3--4-oxo-valeric acid

Conditions
ConditionsYield
10 h Erhitzen.;
4-butanolide
96-48-0

4-butanolide

C19H20ClNO4
1258864-02-6

C19H20ClNO4

3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

Conditions
ConditionsYield
With lithium diisopropyl amide In tetrahydrofuran at -78℃;
4-butanolide
96-48-0

4-butanolide

acetaldehyde
75-07-0

acetaldehyde

ethyl acetate
141-78-6

ethyl acetate

3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

Conditions
ConditionsYield
With sodium carbonate at 44 - 80℃; for 8.66667h; Temperature; Autoclave;
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

allyl bromide
106-95-6

allyl bromide

3-(1-Hydroxy-1-methyl-but-3-enyl)-dihydro-furan-2-one

3-(1-Hydroxy-1-methyl-but-3-enyl)-dihydro-furan-2-one

Conditions
ConditionsYield
With hydrogenchloride; indium In methanol; water for 10h; Ambient temperature;100%
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

3-chloroprop-1-ene
107-05-1

3-chloroprop-1-ene

3-(1-Hydroxy-1-methyl-but-3-enyl)-dihydro-furan-2-one

3-(1-Hydroxy-1-methyl-but-3-enyl)-dihydro-furan-2-one

Conditions
ConditionsYield
With hydrogenchloride; indium In methanol; water for 10h; Ambient temperature;100%
With tin In hydrogenchloride; methanol for 20h; Product distribution; Ambient temperature; other reagent, solvent, reaction time; also with allyl bromide;90%
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

chloro-trimethyl-silane
75-77-4

chloro-trimethyl-silane

4-<1-(trimethylsiloxy)ethenyl>-5-(trimethylsiloxy)-2,3-dihydrofuran
133400-76-7

4-<1-(trimethylsiloxy)ethenyl>-5-(trimethylsiloxy)-2,3-dihydrofuran

Conditions
ConditionsYield
With lithium diisopropyl amide In tetrahydrofuran at -78 - 20℃; for 1h;100%
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

3-acetyl-3-chlorodihydrofuran-2(3H)-one
2986-00-7

3-acetyl-3-chlorodihydrofuran-2(3H)-one

Conditions
ConditionsYield
With chlorine at -10℃; for 5h; Temperature; Saturated gas;99.3%
With sulfuryl dichloride at 5 - 10℃; for 3h;99.1%
With chlorine In dichloromethane at -10℃; for 5h; Temperature; Reagent/catalyst; Flow reactor;99%
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

α-acetyl-α-hydroxy-γ-butyrolactone
135366-64-2

α-acetyl-α-hydroxy-γ-butyrolactone

Conditions
ConditionsYield
With 3,3-dimethyldioxirane; nickel diacetate In water; acetone for 3.5h; Ambient temperature;99%
With 3,3-dimethyldioxirane In acetone at 20℃; for 72h;98%
With samarium (III) iodide; iodine In tetrahydrofuran; water at 25℃; for 12h; Catalytic behavior; Green chemistry;95%
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

methyl vinyl ketone
78-94-4

methyl vinyl ketone

3-acetyl-3-(3-oxobutyl)-4,5-dihydrofuran-2(3H)-one
58623-81-7, 74627-02-4, 176101-57-8

3-acetyl-3-(3-oxobutyl)-4,5-dihydrofuran-2(3H)-one

Conditions
ConditionsYield
With silica gel In neat (no solvent) at 0 - 90℃; for 20h; Michael Addition;99%
NDEAP grafted on silica In water at 80℃; for 0.233333h; Michael addition; microwave irradiation;84%
With iron(III) chloride In dichloromethane at 20℃; Michael reaction;36%
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

benzylamine
100-46-9

benzylamine

2-<1-(N-benzylamino)ethylidene>butyrolactone

2-<1-(N-benzylamino)ethylidene>butyrolactone

Conditions
ConditionsYield
With silica gel at 20℃; for 2h;99%
With β‐cyclodextrin In water at 20℃; for 1.5h; chemospecific reaction;96%
With cerium(III) chloride; tetrabutylammomium bromide at 20℃; for 0.0833333h;95%
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

chloro-trimethyl-silane
75-77-4

chloro-trimethyl-silane

3-[1-[(trimethylsilyl)oxy]ethylidenyl]-4,5-dihydrofuran-2-one

3-[1-[(trimethylsilyl)oxy]ethylidenyl]-4,5-dihydrofuran-2-one

Conditions
ConditionsYield
With lithium diisopropyl amide In tetrahydrofuran at -78 - 20℃;99%
With triethylamine In benzene at 20℃; for 14h; Etherification;
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

rac-methylbenzylamine
618-36-0

rac-methylbenzylamine

(Z)-3-[1-(1-phenylethylamino)ethylidene]tetrahydro-2-furanone

(Z)-3-[1-(1-phenylethylamino)ethylidene]tetrahydro-2-furanone

Conditions
ConditionsYield
With silica gel at 20℃; for 3.5h;99%
at 23℃; for 4h;89%
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

methylamine
74-89-5

methylamine

3-[1-Methylamino-eth-(Z)-ylidene]-dihydro-furan-2-one

3-[1-Methylamino-eth-(Z)-ylidene]-dihydro-furan-2-one

Conditions
ConditionsYield
With silica gel at 20℃; for 4h;99%
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

2-(1-aminoethylidene)butyrolactone

2-(1-aminoethylidene)butyrolactone

Conditions
ConditionsYield
With ammonia; silica gel at 20℃; for 5h;99%
With ammonium acetate; tetraethoxy orthosilicate In ethanol Heating;98%
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

C6H7BF2O3

C6H7BF2O3

Conditions
ConditionsYield
With boron trifluoride diethyl etherate In toluene at 25℃; for 16h;99%
With boron trifluoride diethyl etherate In toluene at 25℃; for 24h;99%
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

nitrostyrene
5153-67-3

nitrostyrene

3-acetyl-3-(-2-nitro-1-phenylethyl)dihydrofuran-2(3H)-one

3-acetyl-3-(-2-nitro-1-phenylethyl)dihydrofuran-2(3H)-one

Conditions
ConditionsYield
With 1-[3,5-bis(trifluoromethyl)phenyl]-3-[(2S)-dimethylamino-(1S)-phenylpropyl]thiourea In diethyl ether at 0℃; for 17h; nitro-Michael reaction; enantioselective reaction;99%
With 3-((3,5-bis(trifluoromethyl)benzyl)amino)-4-((2-(dimethylamino)ethyl)-amino)cyclobut-3-ene-1,2-dione In toluene at 25℃; for 24h; Michael Addition; Inert atmosphere;87%
(3ξ,8α,9R)-cinchonan-6',9-diol In tetrahydrofuran at 20℃; for 0.5h; Product distribution / selectivity; Michael Condensation;
With 1,4-diaza-bicyclo[2.2.2]octane In dichloromethane at 20℃; Michael Addition;
With 1,4-diaza-bicyclo[2.2.2]octane In neat (no solvent) at 20℃; Michael Addition;
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

1,2-diamino-benzene
95-54-5

1,2-diamino-benzene

(Z)-3-[1-(2-aminophenylamino)ethylidene]dihydrofuran-2(3H)-one

(Z)-3-[1-(2-aminophenylamino)ethylidene]dihydrofuran-2(3H)-one

Conditions
ConditionsYield
In ethanol at 20℃; for 24h;99%
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

C6H7ClO3*ClH

C6H7ClO3*ClH

Conditions
ConditionsYield
With chlorine at 25 - 45℃; under 760.051 - 1520.1 Torr; for 2h; Temperature; Pressure; Concentration;98.6%
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

C12H12N2O3
101561-12-0

C12H12N2O3

7-Benzoylamino-6-hydroxy-6,8-dimethyl-1-oxo-2-oxa-7-aza-spiro[4.4]non-8-ene-9-carboxylic acid methyl ester

7-Benzoylamino-6-hydroxy-6,8-dimethyl-1-oxo-2-oxa-7-aza-spiro[4.4]non-8-ene-9-carboxylic acid methyl ester

Conditions
ConditionsYield
In tetrahydrofuran for 0.1h; Ambient temperature;98%
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

(-)-syn-(3R,1'R)-α-(hydroxyethyl)-γ-butyrolactone
155321-91-8

(-)-syn-(3R,1'R)-α-(hydroxyethyl)-γ-butyrolactone

Conditions
ConditionsYield
In N,N-dimethyl-formamide under 375030 Torr; Ambient temperature; Saccharomyces cerevisiae ML29;98%
In N,N-dimethyl-formamide at 26℃; for 24h; Yarrowia lipolytica Y5;95%
With nicotinic acid; ammonium sulfate; potassium dihydrogenphosphate; 5-hydroxy-6-methyl-3,4-pyridinedimethanol; D-glucose; D-myo-inositol; vitamin B1; boric acid; calcium (R)-pantothenate; magnesium sulfate; copper(II) sulfate; zinc(II) sulfate; potassium iodide; calcium chloride; manganese(ll) chloride; iron(II) chloride; biotin In ethanol; water at 29℃; for 96h; Yarrowia lipolytica PFL9CE;69%
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

acrylic acid methyl ester
292638-85-8

acrylic acid methyl ester

3-acetyl-2-oxotetrahydrofuran-3-propanoic acid methyl ester
280568-02-7

3-acetyl-2-oxotetrahydrofuran-3-propanoic acid methyl ester

Conditions
ConditionsYield
With polystyrene supported P1 iminophosphorane P-BEMP In tetrahydrofuran at 20℃; for 3h; Michael addition;98%
With sodium hydride In tert-butyl alcohol at 35℃; for 4h; Michael addition;96%
With 1,4-diaza-bicyclo[2.2.2]octane; water at 20℃; Michael addition;95%
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

4-chloro-aniline
106-47-8

4-chloro-aniline

3-[(Z)-1-(4-chloro-anilino)-ethylidene]-dihydro-furan-2-one
64620-30-0

3-[(Z)-1-(4-chloro-anilino)-ethylidene]-dihydro-furan-2-one

Conditions
ConditionsYield
With cerium(III) chloride; tetrabutylammomium bromide at 20℃; for 0.0833333h;98%
With β‐cyclodextrin In water at 20℃; for 0.333333h; chemospecific reaction;95%
With tris(trifluoroacetato)bismuth(III); tetrabutylammomium bromide at 20℃; for 0.0833333h;93%
cerium(III) chloride In water at 20℃; for 0.0833333h;88%
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

4,4'-oxydiphenylene diamine
101-80-4

4,4'-oxydiphenylene diamine

C24H24N2O5

C24H24N2O5

Conditions
ConditionsYield
With toluene-4-sulfonic acid In toluene for 12h; Heating;98%
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

3-amino-4,6-dimethylpyrazolo[3,4-b]pyridine
41601-44-9

3-amino-4,6-dimethylpyrazolo[3,4-b]pyridine

3-(2-hydroxyethyl)-2,8,10-trimethylpyrido[2',3':3,4]pyrazolo[1,5-a]pyrimidin-4-ol
1220997-01-2

3-(2-hydroxyethyl)-2,8,10-trimethylpyrido[2',3':3,4]pyrazolo[1,5-a]pyrimidin-4-ol

Conditions
ConditionsYield
In diphenylether at 220 - 225℃; for 0.25h;98%
1-Phenylprop-1-yne
673-32-5

1-Phenylprop-1-yne

3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

A

3-acetyl-3-(1-phenylallyl)dihydrofuran-2(3H)-one

3-acetyl-3-(1-phenylallyl)dihydrofuran-2(3H)-one

B

α-acetyl-α-(trans-cinnamyl)-γ-butyrolactone

α-acetyl-α-(trans-cinnamyl)-γ-butyrolactone

Conditions
ConditionsYield
With chloro(1,5-cyclooctadiene)rhodium(I) dimer; bis[2-(diphenylphosphino)phenyl] ether; ytterbium(III) triflate In 1,2-dichloro-ethane at 70℃; for 48h; Schlenk technique; Inert atmosphere; Glovebox; Sealed tube; diastereoselective reaction;A 98%
B n/a
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

Cyclopropyl methyl ketone
765-43-5

Cyclopropyl methyl ketone

Conditions
ConditionsYield
With sodium iodide at 192℃; under 4500.45 Torr; Reagent/catalyst; Temperature; Pressure;97.12%
Stage #1: 3-acetyl-2-oxo-4,5-dihydrofuran With hydrogenchloride In water at 100℃; for 2h;
Stage #2: With sodium hydroxide In water at 80 - 100℃; for 2h;
90.2%
With 1-methyl-pyrrolidin-2-one; sodium iodide at 170℃; for 3h;59%
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

methyl 2-bromoacrylate
4519-46-4

methyl 2-bromoacrylate

methyl 1-methylene-6-oxo-2,7-dioxaspiro[4,4]nonane-3-carboxylate

methyl 1-methylene-6-oxo-2,7-dioxaspiro[4,4]nonane-3-carboxylate

Conditions
ConditionsYield
With 1,8-diazabicyclo[5.4.0]undec-7-ene In tetrahydrofuran Ambient temperature;96%
With 1,8-diazabicyclo[5.4.0]undec-7-ene In tetrahydrofuran at -78 - -50℃; for 2h; domino Michael-O-alkylation;96%
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

p-toluidine
106-49-0

p-toluidine

3-[(Z)-1-(4-toluidino)ethylidene]-dihydro-furan-2-one
64620-32-2

3-[(Z)-1-(4-toluidino)ethylidene]-dihydro-furan-2-one

Conditions
ConditionsYield
With β‐cyclodextrin In water at 20℃; for 1h; chemospecific reaction;96%
ammonium cerium(IV) nitrate at 20℃; for 1.16667h;95%
zirconium(IV) chloride at 20℃; for 0.5h;92%
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

ethanolamine
141-43-5

ethanolamine

3-[1-(2-hydroxyethylamino)ethylidene]tetrahydrofuran-2-one

3-[1-(2-hydroxyethylamino)ethylidene]tetrahydrofuran-2-one

Conditions
ConditionsYield
With tris(trifluoroacetato)bismuth(III); tetrabutylammomium bromide at 20℃; for 0.166667h;96%
With β‐cyclodextrin In water at 20℃; for 1.33333h; chemospecific reaction;95%
With tris(trifluoroacetato)bismuth(III) In water at 20℃; for 10h;93%
With cerium(III) chloride; tetrabutylammomium bromide at 20℃; for 0.0833333h;92%
cerium(III) chloride In water at 20℃; for 0.166667h;85%
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

(E)-2-bromo-β-nitrostyrene
65185-68-4

(E)-2-bromo-β-nitrostyrene

3-acetyl-3-(1-(2-bromophenyl)-2-nitroethyl)dihydrofuran-2(3H)-one

3-acetyl-3-(1-(2-bromophenyl)-2-nitroethyl)dihydrofuran-2(3H)-one

Conditions
ConditionsYield
With 3-((3,5-bis(trifluoromethyl)benzyl)amino)-4-((2-(dimethylamino)ethyl)-amino)cyclobut-3-ene-1,2-dione In toluene at 25℃; for 24h; Michael Addition; Inert atmosphere;96%
3-acetyl-2-oxo-4,5-dihydrofuran
517-23-7

3-acetyl-2-oxo-4,5-dihydrofuran

methyl iodide
74-88-4

methyl iodide

3-acetyl-3-methyl-dihydro-furan-2-one
1123-19-9, 112607-28-0, 112607-29-1

3-acetyl-3-methyl-dihydro-furan-2-one

Conditions
ConditionsYield
With potassium carbonate In acetone at 50℃; for 16h; Large scale;95%
Stage #1: 3-acetyl-2-oxo-4,5-dihydrofuran With sodium methylate In benzene
Stage #2: methyl iodide Further stages.;
83%
With potassium carbonate In acetone80%
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