Propargylation of Carbonyl Compounds by Umpolung of Propargylpalladium Complexes with Diethylzinc

Abstract

The first nucleophilic additions of propargylpalladium complexes have been achieved with the reactions (a), R1 = H, Me, Ph, R2 = H, Me, Ph, SiMe3. In these reactions in addition to the homopropargyl alcohol 1, the allenyl alcohol 2 was only formed for R1 = H, R2 = Me, Ph and the ethylallene 3 for R1 = Ph, R2 = H.