Synthesis of γ-keto sulfones by copper-catalyzed oxidative sulfonylation of tertiary cyclopropanols
作者:Yulia A. Konik、Gábor Zoltán Elek、Sandra Kaabel、Ivar Järving、Margus Lopp、Dzmitry G. Kananovich
DOI:10.1039/c7ob01605k
日期:——
ring-opening oxidative sulfonylation to afford γ-keto sulfones when reacting with sulfinate salts in the presence of copper(II) acetate catalyst and an oxidant (tert-butyl hydroperoxide or atmospheric oxygen). Various fluroalkyl, aryl and alkyl sulfinate salts are successfully employed as sulfonylation reagents, affording the corresponding sulfones up to 94% yields. The experimental protocol is mild
当在乙酸铜(II)催化剂和氧化剂(叔丁基氢过氧化物或大气氧)存在下与亚磺酸盐反应时,叔环丙醇进行开环氧化磺酰化反应,生成γ-酮砜。各种氟烷基,芳基和烷基亚磺酸盐已成功用作磺酰化试剂,相应的砜收率高达94%。实验规程温和,可耐受环丙醇底物中的许多功能。该反应通过一锅氧化-Michael加成反应机理进行,可作为基于Sulfa-Michael反应制备γ-酮砜的现有方法的有用补充。