Thiophenol additions to alkenylidenecyclopropanes. A novel synthesis of karahanaenone
作者:Peter M. Cairns、Leslie Crombie、Gerald Pattenden
DOI:10.1016/s0040-4039(00)87118-x
日期:1982.1
The additions of thiophenol to alkenylidenecyclopropanes (e.g. 3, 14) are found to be highly regioselective and stereoselective leading to - (or - vinyl sulphide adducts (e.g. 4, 15) resulting from additions to the 1,4-double bonds in the starting materials. Thiophenol addition to (1) leads to a mixture of the vinyl sulphides (16) and (17) which undergo Cope rearrangement producing the cycloheptadiene
发现将硫酚加到链烯基亚烷基环丙烷(例如3、14)具有很高的区域选择性和立体选择性,从而导致-(或-起始原料中1,4-双键的添加导致乙烯基硫化物加成物(例如4、15)。。向(1)中加入硫酚导致硫化乙烯(16)和(17)的混合物经历Cope重排,产生环庚二烯(18);水解(18),然后使卡拉哈那酮(19)成为日本啤酒花的有臭成分。和柏树油。