作者:Charles W. Spangler
DOI:10.1016/0040-4020(76)80105-6
日期:1976.1
3-Vinyl-1,3,5-hexatriene undergoes an extremely facile thermal electrocyclization to yield 2-vinyl-1,3-cyclohexadiene. Cyclization is at least thirty times faster than 3-ethyl-1,3,5-hexatriene, the saturated analog. Activation parameters indicate that this electrocyclization is one of the most facile yet observed for an acyclic 6π-electron system.
3-乙烯基-1,3,5-己三烯经过极容易的热电环化反应生成2-乙烯基-1,3-环己二烯。环化反应至少比饱和类似物3-乙基-1,3,5-己三烯快30倍。激活参数表明,这种电环化是非循环6π电子系统中最容易观察到的环化之一。