Cinchona Alkaloid-catalyzed Asymmetric Direct Mannich Reaction of Malononitrile to Imine for Synthesis ofβ-Amino Malononitrile

Autor: Wei Zhou, Yi Pan, Zhijin Lu, Chen Xie, Zhiqiang Duan, Jianlin Han
Rok vydání: 2012
Předmět:
Zdroj: Chinese Journal of Chemistry. 30:2333-2337
ISSN: 1001-604X
DOI: 10.1002/cjoc.201200586
Popis: The first direct asymmetric Mannich reaction of malononitrile to N-Boc-protected imines has been developed with cinchona alkaloid as catalyst. The procedure could tolerate a relatively wide range of substrates, and results in excellent yields and good enantioselectivities even in the presence of only 1 mol% of catalyst loading. The present work provides an easy access to β-amino malononitrile derivatives.
Databáze: OpenAIRE