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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 services. DayangChem can provide different quantities of custom synthesis ch

Crotonic anhydride Manufacturer/High quality/Best price/In stock

Cas:623-68-7

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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Simagchem Corporation

Welcome to Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. We introduce experienced quality product and exceptional JIT service with instant market intelligence in China to benefit our

High quality Crotonic Anhydride supplier in China

Cas:623-68-7

Min.Order:0 Metric Ton

Negotiable

Type:Manufacturers

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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 2-butenoic anhydride

Cas:623-68-7

Min.Order:1

Negotiable

Type:Other

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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

Crotonic anhydride

Cas:623-68-7

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

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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

623-68-7 Crotonic anhydride

Cas:623-68-7

Min.Order:1 Kilogram

FOB Price: $15.0 / 50.0

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

Professional Manufacturer CAS 623-68-7 with best quality

Cas:623-68-7

Min.Order:10 Gram

FOB Price: $146.0 / 176.0

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

2-Butenoic acid,1,1'-anhydride 623-68-7

Cas:623-68-7

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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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-Butenoic acid,1,1'-anhydride

Cas:623-68-7

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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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

CAS NO.:623-68-7

Cas:623-68-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Xiamen Hisunny Chemical Co.,Ltd

Best quality & Attractive price & Professional service; Trial & Pilot & Commercial Hisunny Chemical is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality intermediates, specia

Crotonic Anhydride

Cas:623-68-7

Min.Order:0

Negotiable

Type:Manufacturers

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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

Crotonic anhydride

Cas:623-68-7

Min.Order:0 Metric Ton

Negotiable

Type:Lab/Research institutions

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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-Butenoic acid,1,1'-anhydride

Cas:623-68-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

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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 Crotonican hydride

Cas:623-68-7

Min.Order:100 Gram

Negotiable

Type:Other

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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 Intermediate

Crotonic anhydride

Cas:623-68-7

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

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Henan Tianfu Chemical Co., Ltd.

Our company was built in 2009 with an ISO certificate.In the past 5 years, we have grown up as a famous fine chemicals supplier in China and we had established stable business relationships with Samsung, LG, Merck, Thermo Fisher Scientific and so o

623-68-7 Crotonic anhydride

Cas:623-68-7

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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Xiamen Jenny Chemical Technology Co., Ltd.

GMP standard, high purity, competitive price, in stock 1. Quick Response: within 6 hours after receiving your email. 2. Quality Guarantee: All products are strictly tested by our QC, confirmed by QA, and approved by a third-party lab in China, USA,

Crotonicanhydride

Cas:623-68-7

Min.Order:1 Milligram

Negotiable

Type:Trading Company

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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

Crotonic anhydride

Cas:623-68-7

Min.Order:1 Kilogram

FOB Price: $2.0

Type:Lab/Research institutions

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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

623-68-7 CAS NO.623-68-7

Cas:623-68-7

Min.Order:1 Metric Ton

FOB Price: $7.0 / 8.0

Type:Trading Company

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Henan Sinotech Import&Export Corporation

Chemical Name: Crotonic anhydride CAS No.: 623-68-7 Molecular Formula: C8H10O3 Molecular Weight: 154.16 Appearance:White Powder Storage:Store in cool and dry place, away from sun light. Package:25kg Application:Used mainly in the preparation of sy

Crotonic anhydride

Cas:623-68-7

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Other

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Kono Chem Co.,Ltd

high purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air Port:Beijing or Guangzhou

Crotonicanhydride

Cas:623-68-7

Min.Order:0

Negotiable

Type:Other

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Hangzhou Dingyan Chem Co., Ltd

R & D enterprises have their own stock in stockAppearance:To be subject to the object Package:Customized Application:pharmaceutical intermediates Transportation:Air Port:Shanghai;Guangzhou

But-2-enoic anhydride

Cas:623-68-7

Min.Order:0

Negotiable

Type:Manufacturers

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JINHUA HUAYI CHEMICAL CO., LTD.

Jinhua huayi chemical co., ltd. is dedicated to the development, production and marketing of chemicals. On the basis of equality and mutual benefit, and under the principle of customer first, credit first, quality first, we are ready to join hands

Crotonic Anhydride

Cas:623-68-7

Min.Order:100 Gram

Negotiable

Type:Lab/Research institutions

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Wuhan Fortuna Chemical Co.,Ltd

stable supply&competitive price Storage:Available Package:25KG Or as client requirement Application:Important pharm intermediate Transportation:By air or By sea

Crotonic anhydride

Cas:623-68-7

Min.Order:0

Negotiable

Type:Trading Company

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Henan Allgreen Chemical Co.,Ltd

high quality Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:Organic synthesis Transportation:by air or by sea

Crotonic anhydride

Cas:623-68-7

Min.Order:0

Negotiable

Type:Manufacturers

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Aecochem Corp.

Our clients, like BASF,CHEMO,Brenntag,ASR,Evonik,Merck and etc.Appearance:COA Storage:in stock Application:MSDS/TDS

Crotonic Anhydride

Cas:623-68-7

Min.Order:0

Negotiable

Type:Manufacturers

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Hunan chemfish Pharmaceutical co.,Ltd

Hunan chemfish Pharmaceutical co.,Ltd.located in Lugu High-tech industral park ,Hunan province . with its own R&D center and more than 10000㎡manufacture plant . Chemfish owns 40 reactors from 1000L to 8000L. With complete auxiliary equipment as

Crotonic anhydride

Cas:623-68-7

Min.Order:0

Negotiable

Type:Manufacturers

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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

2-Butenoic acid,1,1'-anhydride

Cas:623-68-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Hangzhou Ocean Chemical Co., Ltd.

★.Best quality according to requirement ★.Competitive price in China market ★.Mature Technical support ★.Professional logistic support

Crotonic anhydride

Cas:623-68-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Changchun Artel lmport and Export trade company

Supply top quality products with a reasonable price Application:api

623-68-7

Cas:623-68-7

Min.Order:0

Negotiable

Type:Trading Company

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Hangzhou Fandachem Co.,Ltd

Crotonic anhydride cas 623-68-7Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express

Crotonic anhydride cas 623-68-7

Cas:623-68-7

Min.Order:0

Negotiable

Type:Other

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Synthetic route

(E)-but-2-enoic acid
107-93-7

(E)-but-2-enoic acid

trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

Conditions
ConditionsYield
With 2-chloro-1,3-dimethylimidazolinium chloride; triethylamine In dichloromethane at 20℃; for 18h; Acylation;96%
With dicyclohexyl-carbodiimide
4-methyleneoxetan-2-one
674-82-8

4-methyleneoxetan-2-one

2-butenoic acid
3724-65-0

2-butenoic acid

trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

Conditions
ConditionsYield
With 1,4-dioxane at 70 - 80℃; folgendes Destillieren des Reaktionsgemisches;
2-butenoic acid
3724-65-0

2-butenoic acid

trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

Conditions
ConditionsYield
With acetic anhydride
(E)-but-2-enoic acid
107-93-7

(E)-but-2-enoic acid

ethynyl methyl ether
6443-91-0

ethynyl methyl ether

trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

Conditions
ConditionsYield
With dichloromethane; mercury(II) oxide
crotonyl chloride
10487-71-5

crotonyl chloride

triethylamine
121-44-8

triethylamine

benzene
71-43-2

benzene

trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

diethyl ether
60-29-7

diethyl ether

(E)-but-2-enoic acid
107-93-7

(E)-but-2-enoic acid

1-ethoxyacetylene
927-80-0

1-ethoxyacetylene

trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

(E)-but-2-enoic acid
107-93-7

(E)-but-2-enoic acid

1-ethoxyacetylene
927-80-0

1-ethoxyacetylene

trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

Conditions
ConditionsYield
With diethyl ether
crotonaldehyde
123-73-9

crotonaldehyde

trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

Conditions
ConditionsYield
With oxygen; cobalt(II) acetate; acetic acid at 30℃; unter leichtem Ueberdruck;
With oxygen; copper (I) acetate; acetic acid at 30℃; unter leichtem Ueberdruck;
With oxygen; manganese(II) acetate; acetic acid at 30℃; unter leichtem Ueberdruck;
With oxygen; acetic acid at 30℃; in Gegenwart einer Mischung von Wismut-,Kobalt- und Kupferpulver;
trans-chrotonyl chloride
625-35-4, 3488-22-0, 10487-71-5

trans-chrotonyl chloride

crotonate of sodium

crotonate of sodium

trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

sodium crotonate

sodium crotonate

trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

Conditions
ConditionsYield
With thionyl chloride; Petroleum ether
trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

methyl 2-O-benzyl-4,6-di-O-methyl-α-D-mannopyranoside
366801-82-3

methyl 2-O-benzyl-4,6-di-O-methyl-α-D-mannopyranoside

methyl 2-O-benzyl-3-O-crotonyl-4,6-di-O-methyl-α-D-mannopyranoside
366801-85-6

methyl 2-O-benzyl-3-O-crotonyl-4,6-di-O-methyl-α-D-mannopyranoside

Conditions
ConditionsYield
With dmap; triethylamine In dichloromethane for 16h;100%
trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

polymer, product of radical polymerization, loading of chiral auxiliary 2.42 mmol/g, Mn=5800, Mw=7000 (GPC, polystyrene standards); monomer(S): styrene; (4S)-4-{4-[(4-vinylbenzyl)oxy]benzyl}-1,3-oxazolidin-2-one

polymer, product of radical polymerization, loading of chiral auxiliary 2.42 mmol/g, Mn=5800, Mw=7000 (GPC, polystyrene standards); monomer(S): styrene; (4S)-4-{4-[(4-vinylbenzyl)oxy]benzyl}-1,3-oxazolidin-2-one

polymer, loading of chiral auxiliary 2.42 mmol/g, Mn=7500, Mw=10000 (GPC, polystyrene standards); monomer(s): styrene; (4S)-4-{4-[(4-vinylbenzyl)oxy]benzyl}-1,3-oxazolidin-2-one; trans-crotonic anhydride

polymer, loading of chiral auxiliary 2.42 mmol/g, Mn=7500, Mw=10000 (GPC, polystyrene standards); monomer(s): styrene; (4S)-4-{4-[(4-vinylbenzyl)oxy]benzyl}-1,3-oxazolidin-2-one; trans-crotonic anhydride

Conditions
ConditionsYield
With dmap; triethylamine In tetrahydrofuran at 70℃; for 48h;100%
methyl 6-deoxy-2,3-bis-O-(phenylmethyl)-α-D-glucopyranoside
56750-58-4

methyl 6-deoxy-2,3-bis-O-(phenylmethyl)-α-D-glucopyranoside

trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

methyl 2,3-di-O-benzyl-4-O-crotonyl-6-deoxy-α-D-glucopyranoside
250687-53-7

methyl 2,3-di-O-benzyl-4-O-crotonyl-6-deoxy-α-D-glucopyranoside

Conditions
ConditionsYield
With dmap; triethylamine In dichloromethane for 20.5h;99%
trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

methyl 2,4,6-tri-O-benzyl-α-D-galactopyranoside
55697-50-2

methyl 2,4,6-tri-O-benzyl-α-D-galactopyranoside

methyl 2,4,6-tri-O-benzyl-3-O-crotonyl-α-D-galactopyranoside

methyl 2,4,6-tri-O-benzyl-3-O-crotonyl-α-D-galactopyranoside

Conditions
ConditionsYield
With dmap; triethylamine In dichloromethane for 120h;98%
trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

methyl-2,3-di-O-benzyl-6-O-(4-toluenesulfonyl)-α-D-glucopyranoside
54522-57-5

methyl-2,3-di-O-benzyl-6-O-(4-toluenesulfonyl)-α-D-glucopyranoside

methyl 2,3-di-O-benzyl-4-O-crotonyl-6-O-p-toluenesulfonyl-α-D-glucopyranoside
366801-70-9

methyl 2,3-di-O-benzyl-4-O-crotonyl-6-O-p-toluenesulfonyl-α-D-glucopyranoside

Conditions
ConditionsYield
With dmap; triethylamine In dichloromethane for 23h;98%
trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

methyl 2,3-di-O-pivaloyl-6-O-p-toluenesulfonyl-α-D-glucopyranoside
366801-67-4

methyl 2,3-di-O-pivaloyl-6-O-p-toluenesulfonyl-α-D-glucopyranoside

methyl 4-O-crotonyl-2,3-di-O-pivaloyl-6-O-p-toluenesulfonyl-α-D-glucopyranoside
366801-69-6

methyl 4-O-crotonyl-2,3-di-O-pivaloyl-6-O-p-toluenesulfonyl-α-D-glucopyranoside

Conditions
ConditionsYield
With dmap; triethylamine In dichloromethane for 23h;98%
trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

(S)-4-Benzyl-2-oxazolidinone
90719-32-7

(S)-4-Benzyl-2-oxazolidinone

(4S)-3-((E)-2-butenoyl)-4-benzyl-2-oxazolidinone
90719-30-5

(4S)-3-((E)-2-butenoyl)-4-benzyl-2-oxazolidinone

Conditions
ConditionsYield
With triethylamine; lithium chloride In tetrahydrofuran at -15 - 20℃; for 12h;97%
With triethylamine; lithium chloride In tetrahydrofuran for 4h; Ambient temperature;88%
methyl O-2,3,6-tri-O-benzyl-α-D-glucopyranoside
19488-48-3

methyl O-2,3,6-tri-O-benzyl-α-D-glucopyranoside

trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

methyl 2,3,6-tri-O-benzyl-4-O-crotonyl-α-D-glucopyranoside

methyl 2,3,6-tri-O-benzyl-4-O-crotonyl-α-D-glucopyranoside

Conditions
ConditionsYield
With dmap; triethylamine In dichloromethane for 21h;97%
trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

(1S,2R)-1,2-diphenylethane-1,2-diol
579-43-1

(1S,2R)-1,2-diphenylethane-1,2-diol

meso-hydrobenzoin mono-trans-crotonate

meso-hydrobenzoin mono-trans-crotonate

Conditions
ConditionsYield
With ytterbium(III) chloride In tetrahydrofuran97%
trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

5-(2-((4S,6R)-6-((2S,3S)-3-(benzyloxy)-2-hydroxybutyl)-2,2-diisopropyl-1,3,2-dioxasilinan-4-yl)propan-2-yl)furan-2-carbaldehyde
1352481-42-5

5-(2-((4S,6R)-6-((2S,3S)-3-(benzyloxy)-2-hydroxybutyl)-2,2-diisopropyl-1,3,2-dioxasilinan-4-yl)propan-2-yl)furan-2-carbaldehyde

(E)-((2S,3S)-3-(benzyloxy)-1-((4R,6S)-6-(2-(5-formylfuran-2-yl)propan-2-yl)-2,2-diisopropyl-1,3,2-dioxasilinan-4-yl)butan-2-yl) but-2-enoate
1352481-43-6

(E)-((2S,3S)-3-(benzyloxy)-1-((4R,6S)-6-(2-(5-formylfuran-2-yl)propan-2-yl)-2,2-diisopropyl-1,3,2-dioxasilinan-4-yl)butan-2-yl) but-2-enoate

Conditions
ConditionsYield
With dmap; triethylamine In dichloromethane at 0℃; for 4h; Inert atmosphere;97%
2-[2-((tert-butyldimethylsilanyloxy)methyl)phenyl]propan-1-ol
942062-83-1

2-[2-((tert-butyldimethylsilanyloxy)methyl)phenyl]propan-1-ol

trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

but-2-enoic acid 2-[2-((tert-butyldimethylsilanyloxy)methyl)phenyl]propyl ester
942062-84-2

but-2-enoic acid 2-[2-((tert-butyldimethylsilanyloxy)methyl)phenyl]propyl ester

Conditions
ConditionsYield
With dmap; triethylamine In dichloromethane at 0℃; for 4h;96%
trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

1-adamanthanol
768-95-6

1-adamanthanol

1-Adamantyl crotonate
134690-47-4

1-Adamantyl crotonate

Conditions
ConditionsYield
Acidic catalyst In cyclohexane Heating;95%
trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

1,3-dimethyl-5-adamantanol
707-37-9

1,3-dimethyl-5-adamantanol

3,5-Dimethyl-1-adamantyl crotonate
134690-48-5

3,5-Dimethyl-1-adamantyl crotonate

Conditions
ConditionsYield
Acidic catalyst In cyclohexane Heating;95%
trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

(1R,2R,3S,4R)-3-O-tert-Butyldimethylsilyl-1,2-O-cyclohexylidene-5-hydroxymethyl-5-cyclohexen-1,2,3,4-tetraol
128044-91-7

(1R,2R,3S,4R)-3-O-tert-Butyldimethylsilyl-1,2-O-cyclohexylidene-5-hydroxymethyl-5-cyclohexen-1,2,3,4-tetraol

(1R,2R,3S,4R)-3-O-tert-Butyldimethylsilyl-5-crotonyloxymethyl-1,2-O-cyclohexylidene-5-cyclohexen-1,2,3,4-tetraol
128044-92-8

(1R,2R,3S,4R)-3-O-tert-Butyldimethylsilyl-5-crotonyloxymethyl-1,2-O-cyclohexylidene-5-cyclohexen-1,2,3,4-tetraol

Conditions
ConditionsYield
With pyridine; dmap In dichloromethane95%
With pyridine; dmap In dichloromethane for 12h; Ambient temperature;95%
trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

methyl 6-deoxy-2,3-di-O-methyl-α-D-glucopyranoside
62853-52-5

methyl 6-deoxy-2,3-di-O-methyl-α-D-glucopyranoside

methyl 4-O-crotonyl-6-deoxy-2,3-di-O-methyl-α-D-glucopyranoside
250687-55-9

methyl 4-O-crotonyl-6-deoxy-2,3-di-O-methyl-α-D-glucopyranoside

Conditions
ConditionsYield
With dmap; triethylamine In dichloromethane for 13h;95%
trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

(S)-4-benzyl-5,5-dimethyloxazolidin-2-one
168297-85-6

(S)-4-benzyl-5,5-dimethyloxazolidin-2-one

(S)-3-((E)-but-2-enoyl)-4-benzyl-5,5-dimethyloxazolidin-2-one
618436-90-1

(S)-3-((E)-but-2-enoyl)-4-benzyl-5,5-dimethyloxazolidin-2-one

Conditions
ConditionsYield
With triethylamine; lithium chloride In tetrahydrofuran at -78 - 20℃; for 12h;94%
trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

6-(piperazin-1-yl)pyridine-3-carbonitrile dihydrochloride

6-(piperazin-1-yl)pyridine-3-carbonitrile dihydrochloride

6-[4-[(2E)-but-2-enoyl]piperazin-1-yl]pyridine-3-carbonitrile

6-[4-[(2E)-but-2-enoyl]piperazin-1-yl]pyridine-3-carbonitrile

Conditions
ConditionsYield
With triethylamine In dichloromethane at 20 - 30℃; for 1h;94%
trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

methyl 6-deoxy-2,3-di-O-pivaloyl-α-D-glucopyranoside
366801-72-1

methyl 6-deoxy-2,3-di-O-pivaloyl-α-D-glucopyranoside

methyl 4-O-crotonyl-6-deoxy-2,3-di-O-pivaloyl-α-D-glucopyranoside
250687-54-8

methyl 4-O-crotonyl-6-deoxy-2,3-di-O-pivaloyl-α-D-glucopyranoside

Conditions
ConditionsYield
With dmap; triethylamine In dichloromethane for 19h;93%
methyl 2,3,4-tri-O-benzyl-D-glucopyranoside
53008-65-4

methyl 2,3,4-tri-O-benzyl-D-glucopyranoside

trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

methyl 2,3,4-tri-O-benzyl-6-O-crotonyl-α-D-glucopyranoside

methyl 2,3,4-tri-O-benzyl-6-O-crotonyl-α-D-glucopyranoside

Conditions
ConditionsYield
With dmap; triethylamine In dichloromethane for 18h;92%
trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

methyl 2,3-di-O-benzyl-6-O-pivaloyl-α-D-glucopyranoside
184715-41-1

methyl 2,3-di-O-benzyl-6-O-pivaloyl-α-D-glucopyranoside

methyl 2,3-di-O-benzyl-4-O-crotonyl-6-O-pivaloyl-α-D-glucopyranoside
250687-57-1

methyl 2,3-di-O-benzyl-4-O-crotonyl-6-O-pivaloyl-α-D-glucopyranoside

Conditions
ConditionsYield
With dmap; triethylamine In dichloromethane for 7h;92%
dimethylenecyclourethane
497-25-6

dimethylenecyclourethane

trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

3-((E)-but-2-enoyl)oxazolidin-2-one
109299-92-5

3-((E)-but-2-enoyl)oxazolidin-2-one

Conditions
ConditionsYield
With triethylamine; lithium chloride In tetrahydrofuran92%
trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

10-trans crotonyl-10-desacetylbaccatin III

10-trans crotonyl-10-desacetylbaccatin III

Conditions
ConditionsYield
With cerium(III) chloride In tetrahydrofuran at 25℃; for 20h; Under N2;91%
cerium(III) chloride In tetrahydrofuran at 25℃; for 20h;91%
trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

(E)-N-(4-(3-hydroxyhexa-1,5-dien-1-yl)phenyl)nicotinamide

(E)-N-(4-(3-hydroxyhexa-1,5-dien-1-yl)phenyl)nicotinamide

(E)-1-(4-(nicotinamido)phenyl)hexa-1,5-dien-3-yl (E)-but-2-enoate

(E)-1-(4-(nicotinamido)phenyl)hexa-1,5-dien-3-yl (E)-but-2-enoate

Conditions
ConditionsYield
Stage #1: (E)-N-(4-(3-hydroxyhexa-1,5-dien-1-yl)phenyl)nicotinamide With dmap; triethylamine In dichloromethane at 0℃;
Stage #2: trans-crotonic anhydride In dichloromethane at 0 - 20℃; for 3h;
90%
trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

trimethylsilyl cyanide
7677-24-9

trimethylsilyl cyanide

benzaldehyde
100-52-7

benzaldehyde

(E)-But-2-enoic acid cyano-phenyl-methyl ester

(E)-But-2-enoic acid cyano-phenyl-methyl ester

Conditions
ConditionsYield
Stage #1: trimethylsilyl cyanide; benzaldehyde; iron(III) chloride In nitromethane at 0℃; for 0.5h;
Stage #2: trans-crotonic anhydride In nitromethane at 20℃; for 3h;
89%
trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

carbon monoxide
201230-82-2

carbon monoxide

2-bromoaniline
615-36-1

2-bromoaniline

(E)-2-(prop-1-en-1-yl)-4H-benzo[d][1,3]oxazin-4-one
1217821-56-1

(E)-2-(prop-1-en-1-yl)-4H-benzo[d][1,3]oxazin-4-one

Conditions
ConditionsYield
With potassium tetrachloropalladate(II); N-ethyl-N,N-diisopropylamine; catacxium A In toluene at 100℃; under 1500.15 Torr; for 16h; Autoclave;88%
trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

ethyl 3-((4R,5R)-5-((3S,4R,E)-4-((tert-butyldimethylsilyl)oxy)-3-hydroxypent- 1-en-1-yl)-2,2-dimethyl-1,3-dioxolan-4-yl)propanoate

ethyl 3-((4R,5R)-5-((3S,4R,E)-4-((tert-butyldimethylsilyl)oxy)-3-hydroxypent- 1-en-1-yl)-2,2-dimethyl-1,3-dioxolan-4-yl)propanoate

(3S,4R,E)-4-((tert-butyldimethylsilyl)oxy)-1-((4R,5R)-5-(3-ethoxy-3-oxopropyl)- 2,2-dimethyl-1,3-dioxolan-4-yl)pent-1-en-3-yl (E)-but-2-enoate

(3S,4R,E)-4-((tert-butyldimethylsilyl)oxy)-1-((4R,5R)-5-(3-ethoxy-3-oxopropyl)- 2,2-dimethyl-1,3-dioxolan-4-yl)pent-1-en-3-yl (E)-but-2-enoate

Conditions
ConditionsYield
With dmap In pyridine at 20℃; for 5h;88%
trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

(2R)-bornane-10,2-sultam
94594-90-8

(2R)-bornane-10,2-sultam

(1S)-N-crotyl-2,10-camphorsultam
94668-55-0

(1S)-N-crotyl-2,10-camphorsultam

Conditions
ConditionsYield
With triethylamine; lithium chloride In tetrahydrofuran for 4h; Ambient temperature;87%
(4S,5R)-4-benzyl-5-(1'H,1'H,2'H,2'H-perfluorooctyl)-oxazolidin-2-one
857637-92-4

(4S,5R)-4-benzyl-5-(1'H,1'H,2'H,2'H-perfluorooctyl)-oxazolidin-2-one

trans-crotonic anhydride
623-68-7

trans-crotonic anhydride

(E)-(4S,5R)-4-benzyl-3-(2'-butenoyl)-5-(1'H,1'H,2'H,2'H-perfluorooctyl)-2-oxazolidinone
857637-81-1

(E)-(4S,5R)-4-benzyl-3-(2'-butenoyl)-5-(1'H,1'H,2'H,2'H-perfluorooctyl)-2-oxazolidinone

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine; lithium chloride In tetrahydrofuran for 24h; Heating;87%

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