反応 #1005953

反応方程式

hydrochloric acid

sodium hydroxide

Ethyl 2-[3-(3,4,5-trichlorophenyl)-3-(trifluoromethyl)pyrrolidin-1-yl]-4-(tri-fluoromethyl)-1,3-thiazole-5-carboxylate

→

title compound

収率 99.0%

2-[3-(3,4,5-trichlorophenyl)-3-(trifluoromethyl)-pyrrolidin-1-yl]-4-(trifluoromethyl)-1,3-thiazole-5-carboxylic acid

収率 99.0%

溶媒

1,4-dioxane

反応条件

後処理

1. 1
   温度After cooling
2. 2
   抽出extracted with ethyl acetate
3. 3
   乾燥The organic layer was dried over magnesium sulfate
4. 4
   その他The solvent was evaporated off under reduced pressure

実験手順

Ethyl 2-[3-(3,4,5-trichlorophenyl)-3-(trifluoromethyl)pyrrolidin-1-yl]-4-(tri-fluoromethyl)-1,3-thiazole-5-carboxylate (2.4 g) was added to a mixture solution comprising 1,4-dioxane (40 mL) and an aqueous solution (40 mL) of sodium hydroxide (2.0 g), followed by heating at 80° C. for ten hours. After cooling, the reaction solution was poured over ice water, acidified by adding concentrated hydrochloric acid, and then extracted with ethyl acetate. The organic layer was dried over magnesium sulfate. The solvent was evaporated off under reduced pressure to obtain the title compound (2.25 g, 99%).

出典