Unsaturated Nitriles: Precursors for a Domino Ozonolysis−Aldol Synthesis of Oxonitriles
作者:Fraser F. Fleming、Adrian Huang、Vaqar A. Sharief、Yifang Pu
DOI:10.1021/jo9822885
日期:1999.4.1
five-membered oxonitriles 22a-c are prepared by analogous ozonolysis-aldol cyclizations employing omega-alkenyl beta-ketonitriles. The method tolerates various substitution patterns and allows for the synthesis of beta,beta-disubstituted oxonitriles (22c). The reaction conditions are essentially neutral providing the beta-hydroxyoxonitriles 22d and 22e with only trace amounts of the aromatic dehydration