Published January 1, 2016
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Calixarene-derived chiral tertiary amine-thiourea organocatalyzed asymmetric Michael additions of acetyl acetone and dimethyl malonate to nitroolefins
- 1. Necmettin Erbakan Univ, Dept Chem, Ahmet Kelesoglu Educ Fac, TR-42090 Konya, Turkey
Description
Novel bifunctional chiral thiourea-tertiary amines bearing a calix[4]arene scaffold were synthesized and applied in catalytic asymmetric Michael addition of acetyl acetone and dimethyl malonate to nitroolefins. The corresponding adducts were obtained in excellent yields (up to 99%) and with high enantioselectivities (up to 94% ee). (C) 2016 Elsevier Ltd. All rights reserved.
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