反応 #91985

反応方程式

(Carbethoxymethylene)triphenylphosphorane

2-(ethoxymethyl)-1-(2-hydroxy-2-methylpropyl)-4-(tritylamino)-1H-imidazo[4,5-c]quinoline-7-carbaldehyde

→

title compound

収率 75.4%

Ethyl (E)-3-[2-(ethoxymethyl)-1-(2-hydroxy-2-methylpropyl)-4-(tritylamino)-1H-imidazo[4,5-c]quinolin-7-yl]prop-2-enoate

収率 75.4%

溶媒

dichloromethane

反応条件

後処理

1. 1
   濃縮concentrated in vacuo
2. 2
   その他Crystallization from dichloromethane and diethyl ether

実験手順

(Carbethoxymethylene)triphenylphosphorane (422 mg, 1.21 mmol) was added to a solution of 2-(ethoxymethyl)-1-(2-hydroxy-2-methylpropyl)-4-(tritylamino)-1H-imidazo[4,5-c]quinoline-7-carbaldehyde (472 mg, 808 μmol) in dichloromethane (8 mL) under argon. The reaction mixture was stirred for 20 h at room temperature and concentrated in vacuo. Crystallization from dichloromethane and diethyl ether afforded the title compound (0.399 g, 75%) as white solid, LC-MS (UV peak area, ESI) 89%, 655.4 (MH+).

出典