V. P. Sheverdov, O. V. Ershov, R. Efimov
May 1, 2004
Citations
0
Influential Citations
3
Citations
Journal
Russian Journal of General Chemistry
Abstract
New methods have been developed for the synthesis of fused amino-substituted pyrrolidinones and dihydropyrrolones. 4-Oxocyclohexane-1,1,2,2-tetracarbonitriles react with ammonia, hydrazine, and hydroxylamine to give, respectively, 5-amino-, 5-hydrazino-, and 5-hydroxylamino-7-oxo-6-azabicyclo[3.2.1]octane-1,2,2-tricarbonitriles, while with phenylhydrazine, semicarbazide, and thiosemicarbazide, 6-hydrazono-, 6-semicarbazono-, and 6-thiosemicarbazono-3-amino-1-oxo-3a,4,5,6,7,7a-hexahydro-1H-isoindole-3a,7a-dicarbonitriles are formed. The latter can also be obtained under analogous conditions from 5-hydroxy-7-oxo-6-azabicyclo[3.2.1]octane-1,2,2-tricarbonitriles. Reactions of 5-hydroxy-7-oxo-6-azabicyclo[3.2.1]octane-1,2,2-tricarbonitriles with diethylamine or triethylamine give 3-amino-1,6-dioxo-3a,4,5,6,7,7a-hexahydro-1H-isoindole-3a,7a-dicarbonitriles.