Halocyclization of Unsaturated Alcohols and Carboxylic Acids Using Bis(<i>sym</i>-collidine)iodine(I) Perchlorate
作者:Robert D. Evans、Joseph W. Magee、J. Herman Schauble
DOI:10.1055/s-1988-27731
日期:——
Reaction of I(collidine)+ 2 ClO- 4 with unsaturated alcohols and carboxylic acids in dichloromethane at ambient temperature has afforded three- to seven-membered-ring iodoethers and four- to seven-membered-ring iodolactones, respectively, in moderate yields and generally with high regioselectivity. The reaction is of particular utility for synthesis of 2-(1-iodoalkyl)oxiranes and -oxetanes.