Enantioselective Michael addition of malononitrile to chalcones catalyzed by a simple quinine–Al(OiPr)3complex: a simple method for the synthesis of a chiral 4H-pyran derivativeElectronic supplementary information (ESI) available: Experimental procedures and analytical and spectral data of products . See DOI: 10.1039/b908632c

Enantioselective Michael addition of malononitrile to chalcones was catalyzed by a simple quinine and Al(OiPr)3complex and products were obtained in good ee as well as high yields, which facilitated the asymmetric synthesis of a biologically active 4H-pyran compound. [ABSTRACT FROM AUTHOR]