期刊
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
卷 2010, 期 20, 页码 3802-3805出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejoc.201000448
关键词
Organocatalysis; Enantioselectivity; Nitrogen heterocycles; Multicomponent reactions
资金
- National Institutes of Health, National Institute of General Medical Sciences [SCIGM082718]
- Welch Foundation [AX-1593]
Several chiral primary amines, mainly those derived from cinchona alkaloids, were evaluated as organocatalysts for the asymmetric Biginelli reaction. With quinine-derived amine catalyst 1 and after extensive optimization of the reaction conditions, 3,4-dihydropyrimidin-2(1H)-ones were obtained in moderate to good yields and 51-78% ee from a three-component reaction of aryl and aliphatic aldehydes, urea, and acetoacetate.
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