Silylcupration of allenes followed by reaction with enones. A new strategy for the synthesis of methylenecyclopentanols

Article abstract of DOI:10.1016/S0040-4039(99)01264-2

Silylcupration of allene using phenyldimethylsilyl-copper followed by conjugated addition to α,β-unsaturated ketones affords oxoallylsilanes with different substitution patterns. When the former oxoallylsilanes are treated with a Lewis acid they undergo h