Competing cyclopropane over epoxide formation from γ-halogeno-δ-hydroxy-ketones
作者:Alain Krief、Adrian Kremer
DOI:10.1016/j.tetlet.2010.02.003
日期:2010.4
Carbocyclization has been selectively achieved over epoxide formationfrom a γ-chloro-δ-hydroxy-ketone in the presence of a lithiumamide or using a different strategy in which the related silyloxyenol ether bearing an iodine atom at gamma-position and a silyloxy group in delta-position is reacted with tetrabutylammonium fluoride. These approaches take advantage of (i) the poor reactivity of the intermediate