7-Ethyl-4-oxo-3-phenyl-4,7-dihydro-isothiazolo[5,4-b]pyridine-5-carboxylic acid

Base Information

Chemical Name:7-Ethyl-4-oxo-3-phenyl-4,7-dihydro-isothiazolo[5,4-b]pyridine-5-carboxylic acid
CAS No.:75907-65-2
Molecular Formula:C₁₅H₁₂N₂O₃S
Molecular Weight:300.338
Hs Code.:

Synonyms:7-Ethyl-4-oxo-3-phenyl-4,7-dihydro-isothiazolo[5,4-b]pyridine-5-carboxylic acid

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Chemical Property of 7-Ethyl-4-oxo-3-phenyl-4,7-dihydro-isothiazolo[5,4-b]pyridine-5-carboxylic acid

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Technology Process of 7-Ethyl-4-oxo-3-phenyl-4,7-dihydro-isothiazolo[5,4-b]pyridine-5-carboxylic acid

There total 4 articles about 7-Ethyl-4-oxo-3-phenyl-4,7-dihydro-isothiazolo[5,4-b]pyridine-5-carboxylic acid which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 65.0%

: 75907-62-9
4-Hydroxy-3-phenyl-isothiazolo[5,4-b]pyridine-5-carboxylic acid

: 75-03-6
ethyl iodide

: 75907-65-2
7-Ethyl-4-oxo-3-phenyl-4,7-dihydro-isothiazolo[5,4-b]pyridine-5-carboxylic acid

Guidance literature:: With potassium carbonate; In N,N-dimethyl-formamide; at 70 - 80 ℃; for 4h;
DOI:10.1002/jhet.5570170418

Reference yield:

: 14208-52-7
5-amino-3-phenylisothiazole

: 75907-65-2
7-Ethyl-4-oxo-3-phenyl-4,7-dihydro-isothiazolo[5,4-b]pyridine-5-carboxylic acid

Guidance literature:: Multi-step reaction with 4 steps

1: 78 percent / 1 h / 110 °C

2: 87 percent / diphenyl ether / 0.75 h / Heating

3: 66 percent / 10percent aq. NaOH / ethanol / 1 h / Heating

4: 65 percent / potassium carbonate / dimethylformamide / 4 h / 70 - 80 °C

With sodium hydroxide; potassium carbonate; In diphenylether; ethanol; N,N-dimethyl-formamide;
DOI:10.1002/jhet.5570170418

Reference yield:

: 75907-59-4
4-Hydroxy-3-phenyl-isothiazolo[5,4-b]pyridine-5-carboxylic acid ethyl ester

: 75907-65-2
7-Ethyl-4-oxo-3-phenyl-4,7-dihydro-isothiazolo[5,4-b]pyridine-5-carboxylic acid

Guidance literature:: Multi-step reaction with 2 steps

1: 66 percent / 10percent aq. NaOH / ethanol / 1 h / Heating

2: 65 percent / potassium carbonate / dimethylformamide / 4 h / 70 - 80 °C

With sodium hydroxide; potassium carbonate; In ethanol; N,N-dimethyl-formamide;
DOI:10.1002/jhet.5570170418