Реакция #595306

Уравнение реакции

N—[[4-[5-(3,5-dichlorophenyl)-4,5-dihydro-5-(trifluoromethyl)-3-isoxazolyl]-1-naphthalenyl]carbonyl]glycine methyl ester

title product

N—[[4-[5-(3,5-dichlorophenyl)-4,5-dihydro-5-(trifluoromethyl)-3-isoxazolyl]-1-naphthalenyl]carbonyl]glycine methyl ester

lithium hydroxide

→

title compound

Выход 99.0%

N—[[4-[5-(3,5-dichlorophenyl)-4,5-dihydro-5-(trifluoromethyl)-3-isoxazolyl]-1-naphthalenyl]carbonyl]glycine

Выход 99.0%

Растворители

tetrahydrofuran

water

Условия реакции

Обработка

1. 1
   Экстракцияextracted with hexane
2. 2
   Другоеto form
3. 3
   ЭкстракцияThe aqueous mixture was extracted with ethyl acetate
4. 4
   Промывкаwashed with brine
5. 5
   Сушкаdried with anhydrous sodium sulfate
6. 6
   Концентрированиеconcentrated

Методика

To a stirred solution of N—[[4-[5-(3,5-dichlorophenyl)-4,5-dihydro-5-(trifluoromethyl)-3-isoxazolyl]-1-naphthalenyl]carbonyl]glycine methyl ester (i.e. the title product of Step A) (620 mg) in tetrahydrofuran (5 mL) was added an aqueous solution of lithium hydroxide (300 mg in 5 mL of water). After stirring at room temperature for 1 h, the reaction mixture was diluted with water and extracted with hexane. The aqueous layer was acidified with 6.0 N HCl to pH=2, causing a white precipitate to form. The aqueous mixture was extracted with ethyl acetate, washed with brine, dried with anhydrous sodium sulfate, and concentrated to afford the title compound as a white solid (600 mg, 99% yield).

Источник