A decisive electronic effect of a bridgehead methoxy substituent on the electrophilic cage opening of 1,3-bishomocubanones
作者:A.J.H. Klunder、G.J.A. Ariaans、B. Zwanenburg
DOI:10.1016/s0040-4039(01)91311-5
日期:1984.1
4-Methoxypentacyclo[5.3.0.02,5.03,9.0,4,8] decan-6-ones 4 and 9 undergo an acid catalysed cage fragmentation to give tricyclodecenediones 6 and 10, respectively. With silver cations under basic conditions, an unusual oxidative cage fission reaction is observed leading to tetracyclo[4.3.0.02,403,8]nonan-5-one 7-carboxylic acids.