Reverse Hydrozirconation Reaction: A Regio‐ and Diastereospecific Route to New Diphosphanes

Abstract

The additional stabilization by the dative PZr bond induces the regio- and diastereospecific formation of the α-zirconated phospholanes 1 on the hydrozirconation of 1-phenyl-2,3-dihydrophosphole. Amazingly, the diphosphanes 3 can be synthesized selectively from the α- (1) as well as the usual α-substituted product 2 on hydrozirconation with the same chlorophosphanes.