Synthesis of Substituted Quinolines Using the Dianion Addition of <i>N</i>-Boc-anilines and α-Tolylsulfonyl-α,β-unsaturated Ketones
作者:Rolf E. Swenson、Thomas J. Sowin、Henry Q. Zhang
DOI:10.1021/jo0203387
日期:2002.12.1
A short and versatile synthesis of substituted quinolines is provided. Alkylation of sodium tolylsulfinate with bromomethyl- or chloromethyl ketones generates beta-keto sulfones. Knoevenagel condensation of the beta-keto sulfones with an aldehyde provides alpha-tolylsulfonyl-alpha,beta-unsaturated ketones. Michael addition of the dianion of N-Boc-anilines in the presence of CuCN and LiCl with the unsaturated