反应 #50109

反应方程式

2e

1,3-dichloro-3-fluoro-7-oxabicyclo[4.1.0]heptane

alcohol

1-vinyl-2,2,6,6-tetrachlorocyclohexanol

sodium hydroxide

→

epoxide

收率 90.0%

1,3,3-trichloro-2-vinyl-7-oxabicyclo[4.1.0]heptane

收率 90.0%

溶剂

water

反应条件

后处理

1. 1
   其他reaction time
2. 2
   萃取ether extraction (4×25 cm3)
3. 3
   其他purified by flash chromatography on silica (eluent: ether/petroleum ether=3/97)

实验过程

The same procedure was employed as for the preparation of 2e in Example 17: it was performed with 1.14 g (4.32 mmol) of pure alcohol 1k, 12 cm3 of distilled water and 0.5 g (12.5 mmol) of sodium hydroxide; reaction time was 1 h 15 min; ether extraction (4×25 cm3); the crude product was employed as such (crude yld=90.5%) or purified by flash chromatography on silica (eluent: ether/petroleum ether=3/97): 0.88 g of epoxide 2i were obtained, that was a 90% yield (macrobore GC purity>98.6%)

来源