作者:Mitsunori Oda、Shigeyasu Kuroda、Ichiro Shimao、Noboru Morita、Toyonobu Asao
DOI:10.1002/recl.19941130707
日期:——
The regioselective synthesis of dimethyl 1,3,5-cyloheptatriene-1,2-dicarboxylate (4) was achieved by a ring expansion method, starting from dimethyl 1,3-cyclohexadiene-2,3-dicarboxylate (5). The title compound 3 was obtained as an air-sensitive oil by zinc-copper reduction of 1,2-bis(bromomethyl)cyclohepta-1,3,5-triene (10) to which the diester 4 was transformed.
通过1,3-环己二烯-2,3-二羧酸二甲酯(5)的扩环方法,实现了1,3,5-环庚三烯-1,2-二羧酸二甲酯的区域选择性合成(4)。通过锌-铜还原转化了二酯4的1,2-双(溴甲基)环庚-1,3,5-三烯(10),得到标题化合物3,为空气敏感性油。