作者:Ronan Guevel、Leo A. Paquette
DOI:10.1021/ja00084a019
日期:1994.3
The first examples of tandem Cope-Cope rearrangements have been identified. When (1R * ,4S * ,6R * )-1,6-divinylbicyclo[2.2.2]oct-2-ene (6) was rearranged thermally, smooth conversion to (1R * ,8aS * )-1,2,3,5,6,8a-hexahydro-1-vinylnaphthalene (8) occurred. The mechanistic course of this isomerization was established by deuterium substitution as in 6-d 1 and by placement of a methoxyl group as in 14
已经确定了串联 Cope-Cope 重排的第一个例子。当 (1R * ,4S * ,6R * )-1,6-divinylbicyclo[2.2.2]oct-2-ene (6) 热重排时,平滑转化为 (1R * ,8aS * )-1,2,3 ,5,6,8a-hexahydro-1-vinylnaphthalene (8) 出现。这种异构化的机理过程是通过 6-d 1 中的氘取代和 14 中的甲氧基基团建立的。 这些标签在热活化后的相应产品中的特定定位构成了对操作的特别严格的测试两个 [3,3] 的 sigmatropic 位移串联