期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 129, 期 49, 页码 15110-+出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja075653v
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A new class of organocatalyst has been developed that incorporates a sulfinyl group as a urea or thiourea substituent. The sulfinyl group serves to simultaneously acidify the urea and provide asymmetric induction in hydrogen-bond-catalyzed reactions. The utility of this new catalyst structure is demonstrated by the high selectivity provided in the aza-Henry reaction not only for aromatic N-Boc imine substrates but also for aliphatic imines for which enantioselective H-bonding catalysis has not previously been demonstrated.
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