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Synlett 2011(9): 1262-1264
DOI: 10.1055/s-0030-1259956
DOI: 10.1055/s-0030-1259956
CLUSTER
© Georg Thieme Verlag
Stuttgart ˙ New YorkEnantioselective Synthesis of 2-Aryl-3-nitro-2H-chromenes Catalyzed by a Bifunctional Thiourea
Further Information
Received
2 February 2011
Publication Date:
20 April 2011 (online)
Publication History
Publication Date:
20 April 2011 (online)

Abstract
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.
Key words
bifunctional organocatalysis - H bond - nitrochromene - tandem reaction - thiourea
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