AN EXPERIMENTAL STUDY OF SPECIAL LEAVING GROUP BEHAVIOR IN THE REACTION OF ARYLIDENEBARBITURIC ACIDS WITH CARBON NUCLEOPHILES

[摘要]：The reaction of benzylidenebarbituric acid and 1,3-dimethylbenzylidenebarbituric acid with malononitrile as well as with dimedone in piperidine is investigated. In reaction with malononitrile, substituted pyridine-3,5-dicarbonitriles are obtained, while with dimedone, xanthenes and/or 6-hydroxy-5((2-hydroxy-4,4-dimethyl-6-oxocyclohex-1-enyl)(aryl(methyl)-1 ,3-dimethyl pyrimidine-2,4(1H,3H)-dione derivatives are isolated.

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