摘要:
Zirconocene complexes of two strained cyclopropenes, bicyclo[3.1.0]hex-5-ene and bicyclo[4.1.0]-hept-6-ene, have been prepared by elimination of bicyclo[3.1.0]hexane and bicyclo[4.1.0] heptane from bis-(bicyclo[3.1.0]hexyl)- and bis(bicyclo[4.1.0]heptyl)zirconocene in the presence of Me3P. The bicycloalkene complexes undergo reaction with diphenylacetylene to give reductive coupling products which react with HCl to give bicycloalkyl-substituted cis-stilbenes.