Abstract

Several zinc and copper β-metallated alkylphosphonates of type 2 have been prepared by the insertion of zinc to dialkyl β-bromoalkylphosphonates of type 1. This new class of d 2 reagents reacts in excellent yields with a broad range of electrophiles such as acyl chlorides, aldehydes, enones, acetylenic esters, allylic and alkynyl halides, trialkyltin halides and nitro olefins.

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