Enantioselective Synthesis of 2-Aryl-3-nitro-2H-chromenes Catalyzed by a Bifunctional Thiourea
作者:Peter Schreiner、Zhiguo Zhang、Gergely Jakab
DOI:10.1055/s-0030-1259956
日期:2011.6
A bifunctional thiourea-catalyzed tandem approach of oxa-Michael―aza-Henry―desulfonamidation was used to synthesize chiral 2-aryl-3-nitro-2H-chromenes. This method provides direct access to the corresponding products in moderate to good yields and enantioselectivities.
双功能硫脲催化的oxa-Michael-aza-Henry-脱磺酰胺串联方法用于合成手性2-芳基-3-硝基-2H-色烯。该方法以中等至良好的产率和对映选择性直接获得相应的产品。