Abstract
A general and efficient asymmetric organocatalytic 1,4-Michael addition of nitromethane to 1,5-diarylpenta-2,4-dien-1-ones (cinnamylideneacetophenones) catalyzed by 9-thiourea-9-(deoxy)-epi-hydroquinine has been developed. The reactions afforded excellent enantioselectivities (up to 99%), high yields (up to 97%), and exclusive regioselectivity.
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