A stereoselective [6π+2π] cycloaddition of 1,2-dienes to 1,3,5,7-cyclooctatetraene in the presence of a multi-component catalytic system CoI2/dppe/Zn/ZnI2, which led to the formation of substituted (E)-bicyclo[4.2.2]deca-2,4,7-trienes in 76—87% yields, was accomplished for the first time.
首次实现了在多组分催化体系
CoI2/dppe/Zn/ZnI2存在下,1,2-二烯与1,3,5,7-环辛四烯的立体选择性[6π+2π]环加成反应,得到取代的(E)-双环[4.2.2]癸-2,4,7-
三烯,产率为76—87%。