Journal
CHEMICAL COMMUNICATIONS
Volume 47, Issue 13, Pages 3992-3994Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0cc05418f
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Funding
- National Natural Science Foundation of China [21072145]
- Foundation for the Author of National Excellent Doctoral Dissertation of PR China [200931]
- Natural Science Foundation of Jiangsu Province of China [BK2009115]
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Thiourea-modified cinchona alkaloids as bifunctional catalysts and a base could catalyze a stepwise [5+1] cyclization of divinyl ketones with nitromethane via double Michael additions, furnishing optically active 4-nitro-cyclohexanones with good yields, excellent diastereoselectivities (>20 : 1) and high enantiomeric ratios (up to 97 : 3).
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