Carbenoid insertion into alkenylzirconocenes—a convergent synthesis of functionalised allylmetallics

Insertion of lithium alkylcarbenoids RC(A)LiX, A=CN, P(O)(OEt)2, SO2Ph, OMe into alkenylzirconocene chlorides derived by hydrozirconation of terminal alkynes affords functionalised allylzirconium reagents which may be further elaborated.