反应 #562135

反应方程式

Piperazinone

2-(2-chloroethyl)pyridine hydrochloride

i-Pr2NEt

→

title compound

收率 33.2%

4-(2-(Pyridin-2-yl)ethyl)piperazin-2-one

收率 33.2%

反应条件

后处理

1. 1
   温度at reflux for 16 h
2. 2
   浓缩The mixture was concentrated
3. 3
   其他the residue was purified by column chromatography (80 g ISCO column
4. 4
   洗涤eluting with methylene chloride

实验过程

Piperazinone (2.2 g, 22 mmol), 2-(2-chloroethyl)pyridine hydrochloride (3.9 g, 22 mmol) and i-Pr2NEt (5.67 g, 7.6 mL, 44 mmol) were heated at reflux for 16 h. The mixture was concentrated, and the residue was purified by column chromatography (80 g ISCO column eluting with methylene chloride and a 10:1 methanol/ammonium hydroxide mixture; gradient 100% methylene chloride to 90% methylene chloride) to provide the title compound (1.5 g, 33%) as a yellow solid; ESI MS m/z 206 [M+H]+.

来源