학술논문
1,3-dipolar cycloaddition of fluorinated azomethine ylides at the C=N bond.
Document Type
Article
Author
Source
Subject
*YLIDES
*IONS
*CARBENES
*CHEMICAL reactions
*RING formation (Chemistry)
*FLUORINATION
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Language
ISSN
1070-4280
Abstract
Azomethine ylides generated by reaction of difluorocarbene withN-alkyl- andN-arylimines derived from benzaldehyde and benzophenone react withN-benzylidenebenzenesulfonamide in a regioselective fashion, yielding the corresponding imidazolidin-4-ones via 1,3-dipolar cycloaddition at the C=N bond. Ylides generated from benzaldehyde imines give rise to mixtures of stereoisomeric 2,5-diphenyl-1-(phenylsulfonyl)-imidazolidin-4-ones, thecisisomer prevailing. [ABSTRACT FROM AUTHOR]