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. Thiophenoladdition to (1) leads to a mixture of the vinyl sulphides (16) and (17) which undergo Cope rearrangement producing the cycloheptadiene