Reductive cleavage of the carbonphosphorus bond with alkali metals. III. Reactions of arylalkylphosphines
作者:Johannes A. van Doorn、Nico Meijboom
DOI:10.1002/recl.19921110402
日期:——
The reductive cleavage of phenylalkylphosphines Ph2PR, PhPR2 (R = Bu, iPr) with Na/NH3 is unselective: both phenyl and alkyl groups can be cleaved and Birch reduction may occur. Reaction of Ph2tBuP gives a high yield of diphenylphosphide. Polar groups (CO2Na, SO3,Na) at the ω position of primary alkyl groups may lead to an increase in selectivity; Birch reduction is suppressed and a functionalised