Stable tetracoordinate 3-phenyl-1,2λ
4
-oxaselenetanes
give the corresponding oxiranes upon thermolysis; in sharp contrast to
CoreyâChaykovsky type reactions, oxirane formation proceeds with
retention of configuration, and the reaction can be recognised as a new
type of carbonâoxygen ligand coupling reaction of
λ
4
-selenanes.
稳定的四配位3-苯基-1,2λ⁴-氧
硒烯烷在热分解作用下生成相应的
环氧化物;这与Corey-Chaykovsky型反应形成鲜明对比,
环氧化物的形成伴随着构型的保留,该反应可以被认定为一种新型的碳-氧
配体偶联反应,涉及Îλ⁴-
硒烯烷。