Acylzirconocene chloride complexes worked well as a reaction partner of azaaromatic-acetylenedicarboxylate zwitterions derived from isoquinolines or pyridines with diethyl acetylenedicarboxylate to afford the corresponding indolizine derivatives.
Acylzirconocene Chloride as an “Unmasked” Acyl Anion: Enantioselective 1,2-Addition toα,β-Unsaturated Ketone Derivatives