Vinylic hydrogens at the β-position of enones were effectively substituted with alkyl groups in a one-pot procedure to afford β-alkyl enones in good to high isolated yields by conjugate addition of higher-order dialkyl cyanocuprates to enones, followed by a reaction with N-tert-butylbenzenesulfinimidoyl chloride at â78 °C.
通过将高阶二烷基
氰基杯酸盐与烯酮共轭加成,然后在§78 °C下与N-
叔丁基苯亚磺
酰亚胺酰
氯反应,烯酮δ²位上的
乙烯基氢被烷基有效取代,从而得到δ烷基烯酮,分离产率从好到高。