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
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