Organocatalyzed asymmetric formal [3 + 2] cycloaddition of isocyanoacetates with N-itaconimides: facile access to optically active spiropyrroline succinimide derivatives

文献情報

出版日 2019-10-17

DOI 10.1039/C9QO00939F

インパクトファクター 5.281

著者

Mei-Xin Zhao, Qiang Liu, Kun-Ming Yu, Xiao-Li Zhao

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要旨

An efficient organocatalytic asymmetric formal [3 + 2] cycloaddition reaction of α-aryl isocyanoacetates with N-aryl or alkyl substituted itaconimides catalyzed by a dihydroquinine derived squaramide catalyst has been investigated, which affords the corresponding spiropyrroline succinimide derivatives with two non-adjacent quaternary–quaternary stereocenters in moderate to good yields (up to 82%) with moderate to excellent diastereoselectivities (up to >20 : 1 dr) and excellent enantioselectivities (90–>99% ee) under mild conditions.

掲載誌

Organic Chemistry Frontiers

CiteScore: 7.8

自己引用率: 8.7%

年間論文数: 724

Organic Chemistry Frontiers publishes high-quality research from across organic chemistry. Emphases are placed on studies that make significant contributions to the field of organic chemistry by reporting either new or significantly improved protocols or methodologies. Topics include, but are not limited to the following: Organic synthesis Development of synthetic methodologies Catalysis Natural products Functional organic materials Supramolecular and macromolecular chemistry Physical and computational organic chemistry

Organocatalyzed asymmetric formal [3 + 2] cycloaddition of isocyanoacetates with N-itaconimides: facile access to optically active spiropyrroline succinimide derivatives

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