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
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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
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
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
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
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inquiryhigh 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
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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
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2-PropynalAppearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express
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factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
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Changzhou Extraordinary Pharmatech co., LTD. As a leading chemical manufacturer and supplier in China.DAS authentication is passed.We can provide the popular precursor chemicals, we have our own strong R & D team, have our own laboratories and fa
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Compound sourcing ServicesAgency of testing serviceFactory audit serviceFounded in Dec. 1999, Nanjing Chemlin Chemical Industrial Co.,Ltd(CHEMLIN) has been covering the business scope from trading of chemicals to custom-synthesis & Manufacturing. Co
Best quality & Attractive price & Professional service; Trial & Pilot & CommercialHenan Fine Chemicals Co., LTD. is a diversified technology - oriented integrated company, which mainly concentrates on fine chemicals. Our company is committed to becom
Aopharm is specialized in APIs, pharmaceutical intermediates & fine chemicals. 1. The best quality, competitive price. 2. The best service before or after shipment. 3. Rich experience in export operation. 4. Rich experience in modes of
United Scientific Company Located in Shanghai of China , is a competitive player in the global specialty and fine chemical market. Fenghua has both the expertise and flexibility to produce a wide range of chemicals. Focusing on developing the innovat
Conditions | Yield |
---|---|
With sulfuric acid In 1,4-dioxane at 18℃; | A n/a B 95% |
Conditions | Yield |
---|---|
With chromium(VI) oxide; sulfuric acid In water; butanone at 20 - 25℃; for 5h; | 91% |
With chromium(VI) oxide; sulfuric acid In water; butanone at 20 - 25℃; under 760.051 Torr; for 1h; | 90% |
With C6H12N2*2ClCrO3(1-)*2H(1+) In dichloromethane at 20℃; for 2h; | 85% |
Conditions | Yield |
---|---|
With sulfuric acid In 1,4-dioxane at 18℃; | A n/a B 84% |
Conditions | Yield |
---|---|
at 750℃; under 0.001 - 0.01 Torr; | A 80% B n/a |
N-methyl-3-formylindole
acetylenemagnesium bromide
A
Propargylic aldehyde
Conditions | Yield |
---|---|
In tetrahydrofuran at 0℃; for 12h; | A n/a B 68% |
DL-erythro-pentyne-(1)-triol-(3.4.5)
Propargylic aldehyde
Conditions | Yield |
---|---|
With sodium periodate; water |
Conditions | Yield |
---|---|
With tert-butylhypochlorite In ethanol |
N-methylpropargylamine
Propargylic aldehyde
Conditions | Yield |
---|---|
Yield given. Multistep reaction; |
Conditions | Yield |
---|---|
Yield given. Multistep reaction. Yields of byproduct given; |
(Z)-1-methoxybut-1-en-3-yne
A
Propargylic aldehyde
B
Methyl formate
Conditions | Yield |
---|---|
With air In chloroform-d1 for 1440h; Product distribution; Ambient temperature; daylight; |
Conditions | Yield |
---|---|
Yield given. Multistep reaction; |
butyl(prop-2-ynyl)amine
Propargylic aldehyde
Conditions | Yield |
---|---|
Yield given. Multistep reaction; |
2-diazo-1-(2-cyclopropen-1-yl)ethanone
A
3-buten-1-yne
B
Propargylic aldehyde
C
1,3-cyclobutadiene
D
acetylene
Conditions | Yield |
---|---|
at 450℃; bei 1E-6 Torr; | |
at 450℃; Irradiation; bei 1E-6 Torr; |
Conditions | Yield |
---|---|
Thermodynamic data; |
Conditions | Yield |
---|---|
With glucose-6-phosphate dehydrogenase; (S)-2-[3]pyridyl-pyrrolidine-1-carboxylic acid amide; D-glucose 6-phosphate; sodium phosphate buffer; rat liver microsomes; potassium chloride; semicarbazide hydrochloride; NADP; magnesium chloride other propargyllic comp.; |
sulfuric acid
propargyl alcohol
A
Propargylic aldehyde
B
Propiolic acid
Conditions | Yield |
---|---|
elektrochemische Oxydation an einer Bleidioxid-Anode; |
Conditions | Yield |
---|---|
With steam; vanadia at 600℃; |
Propargylic aldehyde
Conditions | Yield |
---|---|
With sulfuric acid |
Propargylic aldehyde
Conditions | Yield |
---|---|
With sulfuric acid |
hydrogenchloride
N,N'-prop-2-ynylidene-bis-carbamic acid diethyl ester
Propargylic aldehyde
DL-erythro-pentyne-(1)-triol-(3.4.5)
water
A
Propargylic aldehyde
B
formaldehyd
C
formic acid
formic acid
Propiolaldehyde diethyl acetal
A
Propargylic aldehyde
B
formic acid ethyl ester
Conditions | Yield |
---|---|
at 20℃; for 3h; Esterification; Formolysis; Title compound not separated from byproducts; |
Propiolaldehyde diethyl acetal
Propargylic aldehyde
Conditions | Yield |
---|---|
With sulfuric acid; hydroquinone at 80℃; | |
With hydrogenchloride at 40℃; for 0.5h; |
Conditions | Yield |
---|---|
With air; RuO2 incorporated in ZSM-5 zeolite In toluene at 80℃; under 630.8 Torr; for 32h; |
Propiolaldehyde diethyl acetal
A
Propargylic aldehyde
C
1-ethoxy-prop-2-yn-1-ol
Conditions | Yield |
---|---|
With amberlyst-15; water In [D3]acetonitrile at 25℃; |
Conditions | Yield |
---|---|
Flash vacuum pyrolysis; |
Propargylic aldehyde
(9S)-9-Methyl-1-phenylbicyclo<4.3.0>nona-1(2),3(4)-diene
(1R,3aS,7aS)-7a-Methyl-1-phenyl-1,4,5,6,7,7a-hexahydro-1,3a-etheno-indene-9-carbaldehyde
Conditions | Yield |
---|---|
In benzene under 4875390 Torr; for 12h; Heating; | 100% |
Propargylic aldehyde
bis(2-phenylethyl)phosphine oxide
Conditions | Yield |
---|---|
In tetrahydrofuran at -10 - 22℃; for 0.5h; | 100% |
Propargylic aldehyde
2-methyl-5-<(tert-butyldimethylsilyl)oxy>-1,3-pentadiene
1-formyl-6-<((tert-butyldimethylsilyl)oxy)methyl>-4-methyl-1,4-cyclohexadiene
Conditions | Yield |
---|---|
In benzene at 120℃; | 98% |
With hydroquinone In benzene at 110 - 120℃; for 24h; | 98% |
Propargylic aldehyde
Conditions | Yield |
---|---|
Stage #1: (E)-methyl 2-(3-(2-(tert-butoxycarbonylamino)ethyl)-5-fluoro-1H-indol-2-yl)-3-methoxyacrylate With C19H24N2O; trichloroacetic acid In dichloromethane at 0℃; for 0.25h; Stage #2: Propargylic aldehyde In dichloromethane at 0℃; | 97% |
Propargylic aldehyde
Conditions | Yield |
---|---|
Stage #1: (E)-methyl 2-(3-(2-(benzyloxycarbonylamino)ethyl)-1H-indol-2-yl)-3-methoxyacrylate With C19H24N2O; trichloroacetic acid In dichloromethane at 0℃; for 0.25h; Stage #2: Propargylic aldehyde In dichloromethane at 0℃; | 96% |
Propargylic aldehyde
O,O-dimethyl phosphorodithioic acid
3-(dimethoxyphosphinothioylthio)acrolein
Conditions | Yield |
---|---|
In tetrachloromethane at 25℃; for 16h; | 95% |
Propargylic aldehyde
β-(E)-iodoacrolein
Conditions | Yield |
---|---|
With sulfuric acid; sodium iodide In diethyl ether; water at 0℃; for 2h; Inert atmosphere; | 95% |
With sulfuric acid; sodium iodide In diethyl ether; water at 0℃; for 1h; | 83% |
Conditions | Yield |
---|---|
With (2S,5S)-5-benzyl-2-(tert-butyl)-3-methylimidazolidin-4-one; trichloroacetic acid In toluene at 10℃; Michael Addition; enantioselective reaction; | 95% |
Propargylic aldehyde
3-Methoxy-17-phenyl-1,3,5(10),14(15),16(17)-estrapentaene
C28H28O2
Conditions | Yield |
---|---|
94% | |
In dichloromethane under 4875390 Torr; for 24h; Ambient temperature; | 93% |
Propargylic aldehyde
Conditions | Yield |
---|---|
Stage #1: (E)-ethyl 2-(3-(2-(tert-butoxycarbonylamino)ethyl)-1H-indol-2-yl)-3-ethoxyacrylate With C19H24N2O; trichloroacetic acid In dichloromethane at 0℃; for 0.25h; Stage #2: Propargylic aldehyde In dichloromethane at 0℃; | 94% |
Propargylic aldehyde
Conditions | Yield |
---|---|
Stage #1: (E)-ethyl 2-(3-(2-(benzyloxycarbonylamino)ethyl)-1H-indol-2-yl)-3-ethoxyacrylate With C19H24N2O; trichloroacetic acid In dichloromethane at 0℃; for 0.25h; Stage #2: Propargylic aldehyde In dichloromethane at 0℃; | 94% |
Conditions | Yield |
---|---|
Stage #1: methanol; (E)-methyl 2-(3-(2-acetoxyethyl)-1H-indol-2-yl)-3-methoxyacrylate With C19H24N2O; trichloroacetic acid In dichloromethane at 0℃; for 0.25h; Stage #2: Propargylic aldehyde In dichloromethane at 0℃; | 94% |
Conditions | Yield |
---|---|
With sodium ethanolate In tetrahydrofuran at 0℃; for 0.5h; Temperature; Reagent/catalyst; Solvent; | 93.2% |
Propargylic aldehyde
phosphonic acid diethyl ester
(1-hydroxy-prop-2-ynyl)-phosphonic acid diethyl ester
Conditions | Yield |
---|---|
With triethylamine | 93% |
With sodium ethanolate |
Propargylic aldehyde
Conditions | Yield |
---|---|
Stage #1: (E)-methyl 2-(5-bromo-3-(2-(tert-butoxycarbonylamino)ethyl)-1H-indol-2-yl)-3-methoxyacrylate With C19H24N2O; trichloroacetic acid In dichloromethane at 0℃; for 0.25h; Stage #2: Propargylic aldehyde In dichloromethane at 0℃; | 93% |
Propargylic aldehyde
Conditions | Yield |
---|---|
Stage #1: (E)-methyl 3-methoxy-2-(3-(2-(methoxycarbonylamino)ethyl)-1H-indol-2-yl)acrylate With C19H24N2O; trichloroacetic acid In dichloromethane at 0℃; for 0.25h; Stage #2: Propargylic aldehyde In dichloromethane at 0℃; | 93% |
Propargylic aldehyde
Conditions | Yield |
---|---|
Stage #1: (E)-methyl 2-{3-[2-(tert-butoxycarbonylamino)ethyl]-1H-indol-2-yl}-3,3-dimethoxypropanoate With C19H24N2O; trichloroacetic acid In dichloromethane at 0℃; for 0.25h; Stage #2: Propargylic aldehyde In dichloromethane at 0℃; for 0.5h; Reagent/catalyst; Solvent; Time; | 93% |
Conditions | Yield |
---|---|
92% |
Propargylic aldehyde
(+/-)-(1-2H)prop-2-yn-1-ol
Conditions | Yield |
---|---|
With sodium borodeuteride In water at 5℃; for 0.5h; | 92% |
Conditions | Yield |
---|---|
Stage #1: Propargylic aldehyde; 2-Iodophenol With diethoxymethylsilane; [RhCl(PPh3)3]/Pd(OAc)2/polyammonium iodide gel In 1,4-dioxane at 60℃; for 2h; Stage #2: With tetrabutyl ammonium fluoride In tetrahydrofuran; 1,4-dioxane at 60℃; for 12h; Hiyama cross-coupling reaction; Further stages.; | 92% |
Conditions | Yield |
---|---|
With (2S,5S)-5-benzyl-2-(tert-butyl)-3-methylimidazolidin-4-one; trichloroacetic acid In toluene at 10℃; Catalytic behavior; Reagent/catalyst; Solvent; Michael Addition; enantioselective reaction; | 92% |
Conditions | Yield |
---|---|
With (2S,5S)-5-benzyl-2-(tert-butyl)-3-methylimidazolidin-4-one; trichloroacetic acid In toluene at 10℃; Michael Addition; enantioselective reaction; | 92% |
Conditions | Yield |
---|---|
Stage #1: methanol; (E)-methyl 2-(3-(2-azidoethyl)-1H-indol-2-yl)-3-methoxyacrylate With C19H24N2O; trichloroacetic acid In dichloromethane at 0℃; for 0.25h; Stage #2: Propargylic aldehyde In dichloromethane at 0℃; | 92% |
Conditions | Yield |
---|---|
With 4-methyl-morpholine In tetrahydrofuran at 0℃; for 0.25h; Michael Addition; diastereoselective reaction; | 92% |
Propargylic aldehyde
1H-benzimidazol-2-amine
(E)-3-(2-Amino-benzoimidazol-1-yl)-propenal
Conditions | Yield |
---|---|
90% |
Propargylic aldehyde
benzyl bromide
1-(phenylmethyl)-1H-1,2,3-triazole-4-carboxaldehyde
Conditions | Yield |
---|---|
With sodium azide; copper(II) sulfate; sodium L-ascorbate In water; tert-butyl alcohol at 120℃; for 0.2h; Huisgen cycloaddition; Microwave irradiation; regioselective reaction; | 90% |
Conditions | Yield |
---|---|
Stage #1: bromobenzene With iodine; magnesium In tetrahydrofuran Inert atmosphere; Stage #2: Propargylic aldehyde In tetrahydrofuran at -78℃; Inert atmosphere; | 90% |
With magnesium In tetrahydrofuran; diethyl ether | 58.1% |
Propargylic aldehyde
Conditions | Yield |
---|---|
Stage #1: (E)-methyl 2-(3-(2-(tert-butoxycarbonylamino)ethyl)-5-methyl-1H-indol-2-yl)-3-methoxyacrylate With C19H24N2O; trichloroacetic acid In dichloromethane at 0℃; for 0.25h; Stage #2: Propargylic aldehyde In dichloromethane at 0℃; | 90% |
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