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
Cas:2459-05-4
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inquiryWelcome 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
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inquiryISO KOSHER HALAL Appearance:White to off-white crystal powder Storage:normal condition Package:25kg/bag or as require Application:food additives or other additives Transportation:normal condition, by sea,by air Port:shanghai
We are: Focus on the research, production and sale of Plant and Animal extract, Medical intermediate, complete coverage six industries. Product grade: Medicine, Health care product, Cosmetics, Food,Feed, Biopesticide. Hot selling market: Europe,
Cas:2459-05-4
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inquiry1. 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
Cas:2459-05-4
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inquiryWith our good experience, we offer detailed technical support and advice to assist customers. We communicate closely with customers to establish their quality requirements. Consistent Quality Our plant has strict quality control in each manufacturin
Cas:2459-05-4
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inquiryWITH 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
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inquiryProduct Name Monoethyl fumarate Synonyms (2E)-4-Ethoxy-4-oxo-2-butenoic acid;2-Butenedioic acid (E)-, monoethyl ester;ETHYL ACID FUMARATE;ETHYL HYDROGEN FUMARATE;ETHYL FUMARATE;ETHYL FUMARATE MONOESTER;F
Cas:2459-05-4
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inquiry1.In No Less 10 years exporting experience. you 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 Specializ
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
Cas:2459-05-4
Min.Order:1 Kilogram
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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
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
Our Advantage: high quality with competitive price High quality standard: BP/USP/EP Enterprise standard All purity customized Fast and safe delivery We have reliable forwarder who can help us deliver our goods more fast and safe. We
Cas:2459-05-4
Min.Order:10 Kilogram
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Type:Trading Company
inquiryHangzhou 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
Cas:2459-05-4
Min.Order:0 Metric Ton
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inquiryThe 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
Cas:2459-05-4
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inquiryJ&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
We are one of a few suppliers that can offer custom synthesis service of this product We are specialized in custom synthesis, chemical/pharmaceutical/ pesticides outsourcing and contract research. We are committed to prov
Cas:2459-05-4
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FOB Price: $100.0 / 2000.0
Type:Lab/Research institutions
inquiryProduct name: Monoethyl Fumarate CAS No.:2459-05-4 Molecule Formula:C6H7O4 Molecule Weight:143.12 Purity: 96.0% Package: 25kg/drum Description:White crystalline powder Manufacture Standards:Enterprise Standard TEST
Cas:2459-05-4
Min.Order:1 Kilogram
Negotiable
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inquiryOur company was built in 2009 with an ISO certificate.In the past 6 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
Cas:2459-05-4
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inquiryfactory?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
Cas:2459-05-4
Min.Order:1 Kilogram
FOB Price: $18.0 / 20.0
Type:Trading Company
inquiryZhenyu 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
Cas:2459-05-4
Min.Order:1 Kilogram
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Type:Lab/Research institutions
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
Cas:2459-05-4
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Type:Lab/Research institutions
inquiry1.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
Cas:2459-05-4
Min.Order:1 Metric Ton
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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
Cas:2459-05-4
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Type:Trading Company
inquiryFumaric acid monoethyl esterAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air
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
Shanghai Lonwin Chemical company is a subsidiary of Lonwin Industry Group Limited, was established in 2011 and is headquartered in Shanghai, adjacent to China National Convention and Exhibition Center and Hongqiao transportation hub.Lonwinchem is
Cas:2459-05-4
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Type:Other
inquiryhigh purity,in stock Package:25kg/drum,or as per customers'demand Application:API,or Intermediates,fine chemicals Transportation:air,sea,courier
Acmec is a leading manufacturer and supplier of biochemical reagents and life science products. We have over 40,000 items in stock (real-time inventory) and offer discounted prices to registered members of the online store ( www.acmec.com.cn ) Appea
Cas:2459-05-4
Min.Order:1 bottle
Negotiable
Type:Lab/Research institutions
inquiryOur clients, like BASF,CHEMO,Brenntag,ASR,Evonik,Merck and etc.Appearance:COA Storage:in stock Application:MSDS/TDS
Conditions | Yield |
---|---|
With potassium hydroxide In ethanol for 8h; Ambient temperature; | 89% |
With Candida antarctica lipase; water In 1,4-dioxane for 144h; | 78% |
Conditions | Yield |
---|---|
With iron(III) perchlorate for 2h; Ambient temperature; | 87% |
carbon dioxide
3-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-acrylic acid ethyl ester
(E)-4-ethoxy-4-oxobut-2-enoic acid
Conditions | Yield |
---|---|
With potassium methanolate; copper(l) chloride In N,N-dimethyl acetamide at 70℃; under 760.051 Torr; for 24h; Inert atmosphere; Schlenk technique; Sealed tube; | 76% |
ethyl (2E)-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)acrylate
carbon dioxide
(E)-4-ethoxy-4-oxobut-2-enoic acid
Conditions | Yield |
---|---|
With potassium methanolate; copper(l) chloride In N,N-dimethyl acetamide at 70℃; for 24h; Sealed tube; Schlenk technique; | 76% |
malonic acid monoethyl ester
(E)-4-ethoxy-4-oxobut-2-enoic acid
Conditions | Yield |
---|---|
With aluminum (III) chloride at 70℃; for 2h; | 58% |
diazoacetic acid ethyl ester
ethyl 2-diazo-3-methyl-3-butenoate
A
malonic acid monoethyl ester
B
(E)-4-ethoxy-4-oxobut-2-enoic acid
C
diethyl 2-methylcyclobutene-1,3-dicarboxylate
Conditions | Yield |
---|---|
With tetrakis(acetonitrile)copper(I)tetrafluoroborate In dichloromethane at 20℃; for 2h; Inert atmosphere; | A n/a B n/a C 33% |
Conditions | Yield |
---|---|
With thionyl chloride | |
With TEA | |
Stage #1: maleic anhydride; ethanol at 60℃; for 3h; Stage #2: With aluminum (III) chloride at 20 - 90℃; for 2h; |
ethanol
malic acid
A
(E)-4-ethoxy-4-oxobut-2-enoic acid
B
diethyl Fumarate
Conditions | Yield |
---|---|
With hydrogenchloride |
Conditions | Yield |
---|---|
at 120℃; | |
With hydrogenchloride |
ethanol
(2E)-but-2-enedioic acid
A
(E)-4-ethoxy-4-oxobut-2-enoic acid
B
diethyl Fumarate
Conditions | Yield |
---|---|
With sulfuric acid | |
at 120℃; |
Conditions | Yield |
---|---|
With potassium hydroxide; ethanol Schuetteln, Filtrieren, Verdunsten des Filtrats, Loesen des Rueckstands in Wasser und Schuetteln mit Aether aus; der waessr.Loesung mit Salzsaeure Uebersaettigen und mit Aether Ausschuetteln; |
1,3,5,7,9,10-hexahydro-3,7,10-trimethylpyrimido<5,4-g>pteridine-2,4,6,8-tetrone
diethyl Fumarate
A
(E)-4-ethoxy-4-oxobut-2-enoic acid
B
3,7,10-trimethyl-(1H,3H,7H,10H)-pyrimido<5-4-g>pteridine-2,4,6,8-tetrone
C
(2E)-but-2-enedioic acid
D
succinic acid diethyl ester
Conditions | Yield |
---|---|
In N,N-dimethyl-formamide at 30℃; for 12h; Rate constant; pH=7.00; | A 19 % Spectr. B n/a C 10 % Spectr. D 32 % Chromat. |
selenium(IV) oxide
succinic acid diethyl ester
A
(E)-4-ethoxy-4-oxobut-2-enoic acid
B
diethyl Fumarate
Conditions | Yield |
---|---|
at 170℃; |
glyoxylic acid ethyl ester
diethylphosphonoacetic acid
(E)-4-ethoxy-4-oxobut-2-enoic acid
Conditions | Yield |
---|---|
Stage #1: diethylphosphonoacetic acid With sodium hydride In 1,2-dimethoxyethane at 20℃; Stage #2: glyoxylic acid ethyl ester In 1,2-dimethoxyethane at 20℃; Further stages.; |
Conditions | Yield |
---|---|
iodine In ethanol |
but-2-enedioic acid tert-butyl ester ethyl ester
(E)-4-ethoxy-4-oxobut-2-enoic acid
Conditions | Yield |
---|---|
With water Alkaline conditions; |
malonic acid monoethyl ester
thiourea
(E)-4-ethoxy-4-oxobut-2-enoic acid
Conditions | Yield |
---|---|
In water at 80 - 85℃; for 4h; | 112 g |
[(dimethoxyphosphinothioyl)thio]-butanedioic acid, diethyl ester
A
malathion alpha-dicarboxylic acid
B
(E)-4-ethoxy-4-oxobut-2-enoic acid
C
S-(1,2-dicarboethoxyethyl)O,S-dimethyl phosphorodithioate
D
malathion monocarboxylic acid
F
Diethyl maleate
Conditions | Yield |
---|---|
With carboxylesterase from Escherichia coli IES-02 In aq. phosphate buffer at 37℃; for 1h; pH=7.5; Catalytic behavior; Enzymatic reaction; |
Sorbyl alcohol
(E)-4-ethoxy-4-oxobut-2-enoic acid
ethyl (2E,4E)-hexa-2,4-dien-1-yl fumarate
Conditions | Yield |
---|---|
With dmap; 2`,3`-dideoxycytidine In dichloromethane Ambient temperature; | 100% |
With dmap; dicyclohexyl-carbodiimide In dichloromethane at 0 - 20℃; for 3.5h; | 90% |
(E)-4-ethoxy-4-oxobut-2-enoic acid
octa-4t,6t-dien-3-ol
(E)-But-2-enedioic acid ethyl ester (2E,4E)-1-ethyl-hexa-2,4-dienyl ester
Conditions | Yield |
---|---|
With dmap; 2`,3`-dideoxycytidine In dichloromethane Ambient temperature; | 100% |
(E)-4-ethoxy-4-oxobut-2-enoic acid
4-methoxy-aniline
(E)–4-((4-methoxyphenyl)amino)-4-oxobut-2-enoic acid
Conditions | Yield |
---|---|
Stage #1: (E)-4-ethoxy-4-oxobut-2-enoic acid With oxalyl dichloride; N,N-dimethyl-formamide In benzene at 20℃; for 4h; Inert atmosphere; Stage #2: 4-methoxy-aniline With caesium carbonate In tetrahydrofuran at 20℃; Inert atmosphere; Stage #3: With potassium hydroxide; water In tetrahydrofuran at 20℃; for 4h; Inert atmosphere; | 100% |
(E)-4-ethoxy-4-oxobut-2-enoic acid
4-nitro-aniline
fumaric acid mono-N-(4-nitrophenyl)amide
Conditions | Yield |
---|---|
Stage #1: (E)-4-ethoxy-4-oxobut-2-enoic acid With oxalyl dichloride; N,N-dimethyl-formamide In benzene at 20℃; for 4h; Inert atmosphere; Stage #2: 4-nitro-aniline With caesium carbonate In tetrahydrofuran at 20℃; Inert atmosphere; Stage #3: With potassium hydroxide; water In tetrahydrofuran at 20℃; for 4h; Inert atmosphere; | 100% |
(E)-4-ethoxy-4-oxobut-2-enoic acid
(-)-(4E,6Z)-(1'R,2R,3S)-1,2,3-trihydroxy-1,3-O-ethylidene-4,6-octadiene
(-)-(4E,6Z)-(1'R,2R,3S)-1,3-dihydroxy-1,3-O-ethylidene-4,6-octadien-2-yl ethyl fumarate
Conditions | Yield |
---|---|
Stage #1: (E)-4-ethoxy-4-oxobut-2-enoic acid With dicyclohexyl-carbodiimide In dichloromethane at 20℃; for 0.166667h; Inert atmosphere; Stage #2: With dmap In dichloromethane at 20℃; for 0.166667h; Inert atmosphere; Stage #3: (-)-(4E,6Z)-(1'R,2R,3S)-1,2,3-trihydroxy-1,3-O-ethylidene-4,6-octadiene In dichloromethane for 1h; Inert atmosphere; Reflux; | 100% |
(E)-4-ethoxy-4-oxobut-2-enoic acid
tert-butylisonitrile
4-hydroxy-1-naphthaldehyde
4-aminomethylphenol
Conditions | Yield |
---|---|
With lithium chloride; sodium hydroxide In water at 50℃; under 7500.75 Torr; for 1h; pH=7; Inert atmosphere; Microwave irradiation; | 100% |
(E)-4-ethoxy-4-oxobut-2-enoic acid
tert-butylisonitrile
4-hydroxy-1-naphthaldehyde
benzylamine
Conditions | Yield |
---|---|
With lithium chloride; sodium hydroxide In water at 50℃; under 7500.75 Torr; for 1h; pH=7; Inert atmosphere; Microwave irradiation; | 100% |
(E)-4-ethoxy-4-oxobut-2-enoic acid
N-methyl-1-naphthalenemethylamine hydrochloride
Conditions | Yield |
---|---|
Stage #1: (E)-4-ethoxy-4-oxobut-2-enoic acid With 4-methyl-morpholine; isobutyl chloroformate In dichloromethane Stage #2: N-methyl-1-naphthalenemethylamine hydrochloride In dichloromethane Further stages.; | 99% |
Stage #1: (E)-4-ethoxy-4-oxobut-2-enoic acid With 4-methyl-morpholine; isobutyl chloroformate In dichloromethane at -20℃; for 0.5h; Stage #2: N-methyl-1-naphthalenemethylamine hydrochloride In dichloromethane at 20℃; for 4h; Further stages.; | 99% |
piperidine
(E)-4-ethoxy-4-oxobut-2-enoic acid
trans-3-(1-piperidylcarbonyl)propenoic acid ethyl ester
Conditions | Yield |
---|---|
Stage #1: (E)-4-ethoxy-4-oxobut-2-enoic acid With 4-methyl-morpholine; isobutyl chloroformate In dichloromethane at -20℃; for 0.5h; Stage #2: piperidine In dichloromethane at 20℃; for 4h; Further stages.; | 99% |
(E)-4-ethoxy-4-oxobut-2-enoic acid
N-methylaniline
(E)-4-(methylphenylamino)-4-oxo-2-butenoic acid ethyl ester
Conditions | Yield |
---|---|
Stage #1: (E)-4-ethoxy-4-oxobut-2-enoic acid With 4-methyl-morpholine; isobutyl chloroformate In dichloromethane at -20℃; for 0.5h; Stage #2: N-methylaniline In dichloromethane at 20℃; for 4h; Further stages.; | 99% |
(E)-4-ethoxy-4-oxobut-2-enoic acid
benzyl-methyl-amine
(E)-4-[methyl(phenylmethyl)amino]-4-oxo-2-butenoic acid ethyl ester
Conditions | Yield |
---|---|
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 0 - 25℃; | 98% |
76% | |
Stage #1: (E)-4-ethoxy-4-oxobut-2-enoic acid With 4-methyl-morpholine; isobutyl chloroformate In dichloromethane Stage #2: benzyl-methyl-amine In dichloromethane Further stages.; | 76% |
Stage #1: (E)-4-ethoxy-4-oxobut-2-enoic acid With 4-methyl-morpholine; isobutyl chloroformate In dichloromethane at -20℃; for 0.5h; Stage #2: benzyl-methyl-amine In dichloromethane at 20℃; for 4h; Further stages.; | 76% |
(E)-4-ethoxy-4-oxobut-2-enoic acid
fumaric acid ethyl ester mono chloride
Conditions | Yield |
---|---|
With thionyl chloride at 20℃; for 24h; | 97% |
With oxalyl dichloride In N,N-dimethyl-formamide | 93% |
With dmap; oxalyl dichloride In dichloromethane at 20℃; for 1.5h; | 93% |
(E)-4-ethoxy-4-oxobut-2-enoic acid
(+/-)-2-(Bromomethyl)-1-butanol
(+/-)-Ethyl (E)-3-((2-(bromomethyl)butoxy)carbonyl)prop-2-enoate
Conditions | Yield |
---|---|
With dmap; dicyclohexyl-carbodiimide | 97% |
With dmap; dicyclohexyl-carbodiimide In dichloromethane for 2h; Ambient temperature; | 97% |
(E)-4-ethoxy-4-oxobut-2-enoic acid
Di(tert-butyl)-N-(3-aminopropyl)-N,N'-(ethan-1,2-diyl)bis
Conditions | Yield |
---|---|
With dicyclohexyl-carbodiimide In dichloromethane at 20℃; for 3h; | 97% |
(E)-4-ethoxy-4-oxobut-2-enoic acid
(2E)-3-(1-dimethylsulfamoyl-1H-imidazol-4-yl)prop-2-en-1-ol
(2E)-2-butenedioic acid (2E)-3-(1-dimethylsulfamoyl-1H-imidazol-4-yl)-2-propenyl ester ethyl ester
Conditions | Yield |
---|---|
With dmap; dicyclohexyl-carbodiimide In dichloromethane at -78 - 20℃; for 4h; | 97% |
(E)-4-ethoxy-4-oxobut-2-enoic acid
Benzyl isocyanide
pivalaldehyde
benzylamine
Conditions | Yield |
---|---|
In dichloromethane at 200℃; under 13501.4 Torr; for 0.333333h; Ugi reaction; microwave irradiation; | 97% |
(E)-4-ethoxy-4-oxobut-2-enoic acid
C8H13N3O3S
(2E)-2-butenedioic acid (2E)-3-(1-dimethylsulfamoyl-1H-imidazol-4-yl)-2-propenyl ester ethyl ester
Conditions | Yield |
---|---|
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 0 - 20℃; Inert atmosphere; | 97% |
N-(2-pyrimidyl)indole
(E)-4-ethoxy-4-oxobut-2-enoic acid
Conditions | Yield |
---|---|
With bis(1,5-cyclooctadiene)rhodium(I) trifluoromethanesulfonate; 2,2-dimethylpropanoic anhydride In toluene at 140℃; for 1h; Inert atmosphere; stereoselective reaction; | 97% |
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 12h; | 97% |
With potassium carbonate In N,N-dimethyl-formamide at 55℃; for 16h; | 42.9 g |
(E)-4-ethoxy-4-oxobut-2-enoic acid
(-)-(E)-(1'R,2R,3S)-1,2,3-trihydroxy-1,3-O-ethylidene-5-methyl-4,6-heptadiene
(-)-(E)-(1'R,2R,3S)-1,3-dihydroxy-1,3-O-ethylidene-5-methyl-4,6-heptadien-2-yl ethyl fumarate
Conditions | Yield |
---|---|
With dmap; dicyclohexyl-carbodiimide In dichloromethane for 1h; Inert atmosphere; Reflux; | 96% |
Conditions | Yield |
---|---|
With triethylamine In dichloromethane at -25 - 20℃; Solvent; Temperature; Time; Cooling with acetone-dry ice; | 96% |
(E)-4-ethoxy-4-oxobut-2-enoic acid
Benzyl isocyanide
β-naphthaldehyde
4-methoxy-benzylamine
Conditions | Yield |
---|---|
In dichloromethane at 200℃; under 13501.4 Torr; for 0.333333h; Ugi reaction; microwave irradiation; | 95% |
(E)-4-ethoxy-4-oxobut-2-enoic acid
tert-butylisonitrile
α-methyl-p-hydroxybenzylamine
pivalaldehyde
Conditions | Yield |
---|---|
In water at 200℃; under 13501.4 Torr; microwave irradiation; | 95% |
(E)-4-ethoxy-4-oxobut-2-enoic acid
N-benzyl-1-(4-fluorophenyl)methanamine
trans-3-(benzyl-4-fluorobenzyl)carbamoylpropenoic acid ethyl ester
Conditions | Yield |
---|---|
Stage #1: (E)-4-ethoxy-4-oxobut-2-enoic acid With 4-methyl-morpholine; isobutyl chloroformate In dichloromethane at -20℃; for 0.5h; Stage #2: N-benzyl-1-(4-fluorophenyl)methanamine In dichloromethane at 20℃; for 4h; Further stages.; | 95% |
(E)-4-ethoxy-4-oxobut-2-enoic acid
dibutylamine
trans-3-dibutylcarbamoylpropenoic acid ethyl ester
Conditions | Yield |
---|---|
Stage #1: (E)-4-ethoxy-4-oxobut-2-enoic acid With 4-methyl-morpholine; isobutyl chloroformate In dichloromethane at -20℃; for 0.5h; Stage #2: dibutylamine In dichloromethane at 20℃; for 4h; Further stages.; | 95% |
(E)-4-ethoxy-4-oxobut-2-enoic acid
diethylamine
trans-3-diethylcarbamoylpropenoic acid ethyl ester
Conditions | Yield |
---|---|
Stage #1: (E)-4-ethoxy-4-oxobut-2-enoic acid With 4-methyl-morpholine; isobutyl chloroformate In dichloromethane at -20℃; for 0.5h; Stage #2: diethylamine In dichloromethane at 20℃; for 4h; Further stages.; | 95% |
morpholine
(E)-4-ethoxy-4-oxobut-2-enoic acid
(E)-4-(4-morpholinyl)-4-oxo-2-butenoic acid ethyl ester
Conditions | Yield |
---|---|
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 0 - 25℃; | 95% |
(S)-3-amino-2-(tert-butyldiphenylsilanyloxy)propylcarbamic acid tert-butyl ester
(E)-4-ethoxy-4-oxobut-2-enoic acid
C30H42N2O6Si
Conditions | Yield |
---|---|
With benzotriazol-1-ol; O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 0 - 20℃; for 12h; Inert atmosphere; | 94% |
isocyanate de chlorosulfonyle
(E)-4-ethoxy-4-oxobut-2-enoic acid
(E)-4-ethoxy-4-oxobut-2-enoic anhydride
Conditions | Yield |
---|---|
With triethylamine In dichloromethane at -25 - 10℃; for 6.5h; Solvent; Temperature; Time; Cooling with acetone-dry ice; | 94% |
(E)-4-ethoxy-4-oxobut-2-enoic acid
2,2-Diphenylethylamine
fumaric acid mono-2,2-diphenylethylamide monoethyl ester
Conditions | Yield |
---|---|
With benzotriazol-1-ol; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide In dichloromethane at 20℃; for 20h; | 93% |
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane | 85% |
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane for 24h; | 85% |
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 0 - 20℃; for 48h; Inert atmosphere; | 71% |
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