Реакция #67589

Уравнение реакции

HCl

5-(3,3-dimethyl-but-1-ynyl)-3-[N-(4-methyl-cyclohexanecarbonyl)-N′-(2,2,2-trifluoro-acetyl)-hydrazino]-thiophene-2-carboxylic acid methyl ester

NaOH

→

5-(3,3-dimethyl-but-1-ynyl)-3-[N-(4-methyl-cyclohexanecarbonyl)-hydrazino]-thiophene-2-carboxylic acid

Выход 88.2%

Растворители

EtOAc

Условия реакции

Обработка

1. 1
   Экстракцияextracted with EtOAc
2. 2
   Сушкаdried over Na2SO4
3. 3
   Концентрированиеconcentrated

Методика

To a solution of 5-(3,3-dimethyl-but-1-ynyl)-3-[N-(4-methyl-cyclohexanecarbonyl)-N′-(2,2,2-trifluoro-acetyl)-hydrazino]-thiophene-2-carboxylic acid methyl ester (1.6 g, 3.4 mmol) in EtOAc (20 mL) was added NaOH (6.8 mL of 2M aq solution). After 2 h stirring at rt, the reaction was neutralized with 1M HCl aq, extracted with EtOAc, dried over Na2SO4, and concentrated to give 5-(3,3-dimethyl-but-1-ynyl)-3-[N-(4-methyl-cyclohexanecarbonyl)-hydrazino]-thiophene-2-carboxylic acid (1.1 g, 3 mmol) as an off white solid.

Источник