Enantioselective one-pot synthesis of β-sulfonyl ketones and trisubstituted tetrahydrothiophenes via β-elimination/cycloaddition sequence
作者:Lu Xue、Yidong Liu、Wenling Qin、Hailong Yan
DOI:10.1016/j.cclet.2018.01.047
日期:2018.8
Abstract A mild and efficient enantioselective one-pot synthesis of β-sulfonyl ketones and trisubstituted tetrahydrothiophenes via introducing 1,4-dithiane-2,5-diol to the simple kinetic resolution of β-sulfonyl ketones has been described herein. The one-pot reaction sequence including kinetic resolution and cascade sulfa-Michael/Aldol reaction proceeded successively to afford corresponding sulfonyl
Enantioselective Sulfonation of Enones with Sulfinates by Thiourea/Tertiary-Amine Catalysis
作者:Guang-xun Li、Jin-zhong Zhao、Si-fan Wang、Ming Yan、Jin-yi Shi
DOI:10.1055/a-2202-0842
日期:——
substrates that could be converted into sulfinic acids by treatment with boric acid. The bifunctional catalyst forms a chiral ion pair with the sulfinic acid and controls the enantioselectivity of the sulfonation through hydrogen bonding.