Highly Enantioselective Construction of a Chiral Tertiary Carbon Center by Alkynylation of a Cyclic N‐Acyl Ketimine: An Efficient Preparation of HIV Therapeutics

Second-generation nonnucleoside reverse transcriptase inhibitors can now be efficiently prepared. Alkynylation of the ketimine (see scheme; PMB=p-methoxybenzyl) leads to the synthesis of tertiary amines in excellent yield and with high enantioselectivity. The ligand used in the reaction is a derivative of chloramphenicol base. Supporting information for this article is available on the WWW under http: //www. wiley-vch. de/contents/jc₂002/2004/z52301ₛ. pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.