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DFT Study on the Mechanisms and Stereoselectivities of the [4 + 2] Cycloadditions of Enals and Chalcones Catalyzed by N-Heterocyclic Carbene

โœ Scribed by Li, Zhenyu; Wei, Donghui; Wang, Yang; Zhu, Yanyan; Tang, Mingsheng

Book ID
125432886
Publisher
American Chemical Society
Year
2014
Tongue
English
Weight
700 KB
Volume
79
Category
Article
ISSN
0022-3263

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Enantioselective [4+2] cycloaddition of
Enantioselective [4+2] cycloaddition of ketenes and 9,10-phenanthrenequinone catalyzed by N-heterocyclic carbenes
โœ Pan-Lin Shao; Xiang-Yu Chen; Li-Hui Sun; Song Ye ๐Ÿ“‚ Article ๐Ÿ“… 2010 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 360 KB

Chiral N-heterocyclic carbenes were found to be efficient catalysts for the formal [4+2] cycloaddition reaction of alkyl(aryl)ketenes and 9,10-phenanthrenequinone to give the corresponding cycloadducts in good yields with high enantioselectivities.