The 2π + 2π cycloaddition of an allyl cation to (1Z,3E)-cycloalkadienes. Evidence for a stepwise process in the lonic Diels-Alder reaction.
作者:Paul G. Gassman、Subhash P. Chavan、Lawrence B. Fertel
DOI:10.1016/s0040-4039(00)97098-9
日期:1990.1
Treatment of (1Z,3E)-cycloalkadienes with 2-vinyl-1,3-dioxolane under acidic conditions produced 1:1 cycloadducts in which an intermediate allyl cation added to the dienes to give trans-fused cyclobutanes as the major products.
在酸性条件下用2-乙烯基-1,3-二氧戊环处理(1 Z,3 E)-环链二烯可产生1:1的环加合物,其中将中间烯丙基阳离子添加到二烯中,得到反式稠合的环丁烷为主要产物。