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.
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