ChemInform Abstract: Cinchona Alkaloid Amide Catalyzed Enantioselective Formal [2 + 2] Cycloadditions of Allenoates and Imines: Synthesis of 2,4-Disubstituted Azetidines
Autor: | J. M. Denis, Jieping Zhu, Pascal Retailleau, Géraldine Masson |
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Rok vydání: | 2011 |
Předmět: | |
Zdroj: | ChemInform. 42 |
ISSN: | 0931-7597 |
DOI: | 10.1002/chin.201140100 |
Popis: | Asymmetric formal [2 + 2] cycloaddition of N-sulfonylimines (I) and (IV) with allenoates (II) is efficiently catalyzed by a bifunctional glycinamide-containing quinidine organocatalyst to give azetidines (III) and (V), resp., in high enantioselectivity (up to 98% e.e.). |
Databáze: | OpenAIRE |
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