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inquiryAbout Product Details Ethyl 2-(2-aminothiazole-4-yl)-2-hydroxyiminoacetate Basic information
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inquirythiourea
ethyl 4-chloro-2-hydroxyimino-3-oxo-butyrate
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
Conditions | Yield |
---|---|
In ethanol; water at 20℃; for 1h; | |
In N,N-dimethyl acetamide at 20℃; for 3h; | 8.9 g |
ethyl 2-(hydroxyimino)-3-oxybutyrate
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: SO2Cl2; glac. AcOH / 1 h / 58 - 60 °C 2: 8.9 g / N,N-dimethyl-acetamide / 3 h / 20 °C View Scheme | |
With sulfuryl dichloride; thiourea; 2,3-Dimethylaniline In diethyl ether; ethanol; dichloromethane |
ethyl acetoacetate
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: aq. NaNO2; glac. AcOH / 0.5 h / 10 °C 2: SO2Cl2; glac. AcOH / 1 h / 58 - 60 °C 3: 8.9 g / N,N-dimethyl-acetamide / 3 h / 20 °C View Scheme |
ethyl acetoacetate
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: sodium nitrite; acetic acid / water / 3.7 h / 20 °C 2.1: sulfuric acid / water; methanol; ethanol / 15 - 20 °C 2.2: 3407 / 2.5 h / 20 - 28 °C View Scheme |
ethyl 2-(hydroxyimino)-3-oxybutyrate
thiourea
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
Conditions | Yield |
---|---|
Stage #1: ethyl 2-(hydroxyimino)-3-oxybutyrate With sulfuric acid In methanol; ethanol; water at 15 - 20℃; Stage #2: thiourea With tetrabutylammomium bromide; potassium carbonate In methanol at 20 - 28℃; for 2.5h; |
trityl chloride
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
ethyl 2-(2-tritylaminothiazol-4-yl)-(Z)-2-(tritylhydroxyimino)acetate
Conditions | Yield |
---|---|
Stage #1: (Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate With triethylamine In acetonitrile at 20 - 25℃; for 0.166667h; Stage #2: trityl chloride In acetonitrile at 55 - 60℃; for 1h; | 99.2% |
With triethylamine In N,N-dimethyl-formamide at 50℃; | 85% |
With triethylamine In N,N-dimethyl-formamide at 50℃; | 85% |
sodium hydrogencarbonate
3-bromopropylamine tert-butylcarbamate
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
Conditions | Yield |
---|---|
With potassium carbonate In water; ethyl acetate; N,N-dimethyl-formamide | 96% |
With potassium carbonate In water; ethyl acetate; N,N-dimethyl-formamide | 96% |
triphenylmethyl alcohol
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
ethyl (2-aminothiazol-4-yl)-2-(Z)-(trityloxyimino)acetate
Conditions | Yield |
---|---|
Stage #1: triphenylmethyl alcohol; (Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate With boron trifluoride diethyl etherate; acetic acid In water; ethyl acetate at -5 - 45℃; for 25.5h; Inert atmosphere; Stage #2: With sodium hydrogencarbonate In water | 92% |
chloroacetyl chloride
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
4-<(Z)-1-Carbethoxy-1-hydroxyimino>methyl-2-chloroacetamidothiazole
Conditions | Yield |
---|---|
In N,N-dimethyl acetamide 1) 30 min., 0 deg C, 2) 30 min., room temper.; | 88% |
Cyclopentyl bromide
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
ethyl (Z)-2-(2-aminothiazol-4-yl)-2-(cyclopentyloxyimino)acetate
Conditions | Yield |
---|---|
With potassium carbonate In dimethyl sulfoxide at 50℃; for 20h; | 81% |
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
Conditions | Yield |
---|---|
In chloroform; N,N-dimethyl-formamide at 20℃; for 0.5h; | 21% |
trityl chloride
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
ethyl (Z)-2-hydroxyimino-2-(2-triphenylmethylaminothiazol-4-yl)acetate
Conditions | Yield |
---|---|
With triethylamine In N,N-dimethyl-formamide for 1h; | |
With triethylamine In N,N-dimethyl-formamide at 20℃; |
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
2-(2-Amino-1,3-thiazol-4-yl)-2-(hydroxyimino)acetic acid
Conditions | Yield |
---|---|
With sodium hydroxide In ethanol at 45℃; for 0.5h; | |
With sodium hydroxide In ethanol | |
With sodium hydroxide In ethanol |
N,N-dimethyl acetamide
trityl chloride
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
Conditions | Yield |
---|---|
Yield given. Multistep reaction; |
trityl chloride
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
A
ethyl 2-(2-tritylaminothiazol-4-yl)-(Z)-2-(tritylhydroxyimino)acetate
B
ethyl (2-aminothiazol-4-yl)-2-(Z)-(trityloxyimino)acetate
Conditions | Yield |
---|---|
With potassium tert-butylate In tetrahydrofuran 1.) r.t., 2 h, 2.) 40 deg C, 4 h; Yield given. Yields of byproduct given. Title compound not separated from byproducts; |
trityl chloride
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
A
(Z)-2-(2-aminothiazol-4-yl)-2-(triphenylmethoxyimino)acetic acid
B
(Z)-2-(trityloxyimino)-2-(2-tritylamino-4-thiazolyl)acetic acid
Conditions | Yield |
---|---|
With potassium tert-butylate 1.) THF, r.t., 2 h; 40 deg C, 4 h, 2.) EtOH, reflux, 4 h; Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts; | |
With potassium tert-butylate 1.) THF, r.t., 2 h; 40 deg C, 4 h, 2.) EtOH, reflux, 4 h; Yield given. Multistep reaction. Title compound not separated from byproducts; |
trityl chloride
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
ethyl (2-aminothiazol-4-yl)-2-(Z)-(trityloxyimino)acetate
Conditions | Yield |
---|---|
With potassium tert-butylate In tetrahydrofuran | |
In tetrahydrofuran; chloroform; mineral oil |
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
cefdinir
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1: 52.2 percent / TEA / CHCl3 / 1.5 h / 20 °C 2: 97.6 percent / aq. NaOH / dioxane / 2 h / 100 - 110 °C 3: 92.4 percent / N,N-dimethylaniline; POCl3 / CH2Cl2 / 1.5 h / -15 - -10 °C 4: TFA; anisole / CH2Cl2 / 0 - 5 °C 5: 2.54 g / aq. HCOOH / 3 h / 20 °C View Scheme |
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
7β-[(Z)-2-(2-amino-4-thiazolyl)-2-(trityloxyamino)acetamido]-3-vinylcephem-4-carboxylic acid
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: 52.2 percent / TEA / CHCl3 / 1.5 h / 20 °C 2: 97.6 percent / aq. NaOH / dioxane / 2 h / 100 - 110 °C 3: 92.4 percent / N,N-dimethylaniline; POCl3 / CH2Cl2 / 1.5 h / -15 - -10 °C 4: TFA; anisole / CH2Cl2 / 0 - 5 °C View Scheme |
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 52.2 percent / TEA / CHCl3 / 1.5 h / 20 °C 2: 97.6 percent / aq. NaOH / dioxane / 2 h / 100 - 110 °C View Scheme |
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
diphenylmethyl 7β-[2-(2-tritylaminothiazol-4-yl)-(Z)-2-tritylhydroxyimino]-3-vinyl-3-cephem-4-carboxylate
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 52.2 percent / TEA / CHCl3 / 1.5 h / 20 °C 2: 97.6 percent / aq. NaOH / dioxane / 2 h / 100 - 110 °C 3: 92.4 percent / N,N-dimethylaniline; POCl3 / CH2Cl2 / 1.5 h / -15 - -10 °C View Scheme |
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
(Z)-2-(2-aminothiazol-4-yl)-2-(triphenylmethoxyimino)acetic acid
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: T-BuOK / tetrahydrofuran 2: KOH / ethanol / Saponification View Scheme | |
Multi-step reaction with 2 steps 1.1: boron trifluoride diethyl etherate / acetic acid / ethyl acetate; water / 25.5 h / -5 - 45 °C / Inert atmosphere 2.1: potassium hydroxide; water / ethanol / 20 - 30 °C / Reflux 2.2: pH 4 - 5 View Scheme |
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
(Z)-2-(2-amino-5-chlorothiazol-4-yl)-2-(triphenylmethoxyimino)acetic acid
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: T-BuOK / tetrahydrofuran 2: KOH / ethanol / Saponification 3: 71 percent / N-chlorosuccinimide / dimethylformamide / 20 °C View Scheme |
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
Conditions | Yield |
---|---|
Multi-step reaction with 7 steps 1.1: T-BuOK / tetrahydrofuran 2.1: KOH / ethanol / Saponification 3.1: 71 percent / N-chlorosuccinimide / dimethylformamide / 20 °C 4.1: 65 percent / pyridine; POCl3 / tetrahydrofuran / 0.5 h / cooling 5.1: 95 percent / sodium hydrogen sulfide hydrate / dimethylformamide / 0.25 h / -20 °C 6.1: 26 percent / dimethylformamide / 20 °C 7.1: trifluoroacetic acid / CH2Cl2 / 1.5 h 7.2: formic acid / H2O / 4 h / 20 °C View Scheme |
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
(7R)-7-[(Z)-2-(2-amino-5-chlorothiazol-4-yl)-2-(triphenylmethoxyimino)acetamido]-3-chloro-3-cephem-4-carboxylate diphenylmethyl ester
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: T-BuOK / tetrahydrofuran 2: KOH / ethanol / Saponification 3: 71 percent / N-chlorosuccinimide / dimethylformamide / 20 °C 4: 65 percent / pyridine; POCl3 / tetrahydrofuran / 0.5 h / cooling View Scheme |
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
(7R)-7-[(Z)-2-(2-amino-5-chlorothiazol-4-yl)-2-(triphenylmethoxyimino)acetamido]-3-mercapto-3-cephem-4-carboxylate diphenylmethyl ester
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1: T-BuOK / tetrahydrofuran 2: KOH / ethanol / Saponification 3: 71 percent / N-chlorosuccinimide / dimethylformamide / 20 °C 4: 65 percent / pyridine; POCl3 / tetrahydrofuran / 0.5 h / cooling 5: 95 percent / sodium hydrogen sulfide hydrate / dimethylformamide / 0.25 h / -20 °C View Scheme |
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
(7R)-7-[(Z)-2-(2-amino-5-chlorothiazol-4-yl)-2-(triphenylmethoxyimino)acetamido]-3-[3-(N-tert-butoxycarbonylaminoethylthiomethyl)pyrid-4-ylthio]-3-cephem-4-carboxylate diphenylmethyl ester
Conditions | Yield |
---|---|
Multi-step reaction with 6 steps 1: T-BuOK / tetrahydrofuran 2: KOH / ethanol / Saponification 3: 71 percent / N-chlorosuccinimide / dimethylformamide / 20 °C 4: 65 percent / pyridine; POCl3 / tetrahydrofuran / 0.5 h / cooling 5: 95 percent / sodium hydrogen sulfide hydrate / dimethylformamide / 0.25 h / -20 °C 6: 26 percent / dimethylformamide / 20 °C View Scheme |
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
S-(2-benzothiazolyl) 2-(2-aminothiazol-4-yl)-2(Z)-trityloxyiminothioacetate
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 2: 1.) Ph3P / 1.) CH2Cl2, r.t., 40 min, 2.) r.t., 1.5 h View Scheme |
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
(6R,7R)-7-{2-(2-Amino-thiazol-4-yl)-2-[(Z)-trityloxyimino]-acetylamino}-3-methoxymethyl-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid (S)-1-(2,2-dimethyl-propionyloxy)-ethyl ester
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 2: 1.) Ph3P / 1.) CH2Cl2, r.t., 40 min, 2.) r.t., 1.5 h 3: dimethylformamide; propan-1-ol / 2 h / Ambient temperature View Scheme |
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 2: 1.) Ph3P / 1.) CH2Cl2, r.t., 40 min, 2.) r.t., 1.5 h 3: dimethylformamide; propan-1-ol / 2 h / Ambient temperature 4: 86 percent / propan-1-ol / 1.5 h / 80 °C View Scheme |
(Z)-ethyl 2-(2-aminothiazol-4-yl)-2-hydroxyiminoacetate
(Z)-2-(2-aminothiazol-4-yl)-2-(cyclopentyloxyimino)acetic acid
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 81 percent / potassium carbonate / dimethylsulfoxide / 20 h / 50 °C 2: 80 percent / aq. NaOH / H2O; ethanol / 16 h / Ambient temperature View Scheme |
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