期刊
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
卷 2007, 期 1, 页码 167-177出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejoc.200600664
关键词
organocatalysis; aldol reactions; amination; Robinson annelation; proline; 1-silacyclohexan-4-one
A new chiral benzimidazole-pyrrolidine has been devised, which exhibits excellent activities in aminocatalyzed aldol reactions, leading to aldol products in high yields and enantioselectivities in the presence of an equimolar amount of a Bronsted acid. This organocatalyst has demonstrated remarkable reactivities in aldol processes even with equimolar amounts of aldehyde and ketone in THF. A discussion of the role of the Bronsted acid as a co-catalyst is provided along with some applications of this new class of organocatalyst in Robinson annelation and alpha-amination processes. ((c) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007).
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