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
摘要本文介绍了通过引入1,4-二噻吩-2,5-二醇以简单动力学拆分β-磺酰基酮的温和有效的对映选择性一锅合成β-磺酰基酮和三取代的四氢噻吩的方法。依次进行包括动力学拆分和级联磺胺-迈克尔/阿尔多反应在内的一锅反应序列,得到具有高对映选择性(85%–98%ee和84%–95%ee)的相应磺酰基酮和四氢噻吩。