Title of article
[3+2]- Versus [4+2]-cycloaddition reactions of 3-methylsulfanyl-2-arylazo-3-(pyrrolidin-1-yl)acrylonitriles with N-substituted maleimides involving pyrrolidine-derived azomethine ylides
Author/Authors
Deryabina، نويسنده , , Tatyana G. and Belskaia، نويسنده , , Natalia P. and Kodess، نويسنده , , Michail I. and Dehaen، نويسنده , , Wim and Toppet، نويسنده , , Suzanne and Bakulev، نويسنده , , Vasiliy A.، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2006
Pages
3
From page
1853
To page
1855
Abstract
3-Methylsulfanyl-2-arylazo-3-(pyrrolidin-1-yl)acrylonitriles do not enter into [4+2]-cycloaddition reactions with maleimides to form the expected pyrrolo-pyridazines. Instead the formation of novel pyrrolo-pyridazines of type 4 takes place via a formal [3+2]-cycloaddition of initially formed pyrrolidine-derived azomethine ylides 7. The mechanism leading to the final product is discussed.
Keywords
Diazadienes , azomethine ylides , Maleimides , Pyrrolizidines , cycloaddition
Journal title
Tetrahedron Letters
Serial Year
2006
Journal title
Tetrahedron Letters
Record number
1849221
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