Dimers derived from 10-trispiro[2.0.2.0.2.1]decylidene: New hydrocarbons with interesting structural features
作者:Armin De Meijere、Horst Wenck、Jürgen Kopf
DOI:10.1016/s0040-4020(01)81694-x
日期:1988.1
products: the dimethylenedispirooctane 9, the dimer 11 arising from [4+2]-cycloaddition of 7 to 9 and - predominantly - dimethylenetricyclodecane 12. The expected Cope rearrangement of 12 to the interesting bisbridgehead-diene 22 could not be detected, but the oxidation product (E)-10,10'-bi(dispiro-[2.0.2.4]decanylidene)-7,7'-dione (25) obtained upon heating 12 in nitrobenzene most probably arose from
标题卡宾3尽管负载有三个给电子体的螺环丙烷单元,但并未二聚为烯烃4,而仅扩环成螺环丙烷丙烷化的双环[2.2.0] hex-1(4)-烯7。与相应的母体化合物相似,7产生三种主要的烃产物:二亚甲基二螺辛烷9,由[4 + 2]-环加成7至9和-主要-二亚甲基三环癸烷12产生的二聚体11。不能检测到双桥头二烯22,但是在硝基苯中加热12时得到的氧化产物(E)-10,10'-双(二螺-[2.0.2.4]癸二烯)-7,7'-二酮(25)可能是由双烯丙基双自由基20在升高的温度下平衡为12和22引起的。2437