ENAMINES OF CYCLOHEXANONE DICARBOXYLATES AND SPIROPYRIMIDINETRIONE, THIOXOPYRIMIDINEDIONE, PYRAZOLIDINEDIONE AND ISOXAZOLIDINEDIONE AND DERIVATIVES OF SPIRO-PYRAZOLIDINEDIONE AND DERIVATIVES OF SPIRO-PYRAZOLIDINEDIONE AND ISOXAZOLIDINEDIONE

Enamination of cyclohexanone dicarboxylates and spiro-pyrimidinetrione s, thioxopyrimidinediones, pyrazolidinediones, and isoxazolidinediones (1-5) with pyrrolidine, piperidine and morpholine lead to their enami no derivatives (6-20). The N-substituted derivatives (21-28) of 4 and 5 have also been prepared by acylation and nitrosation. The IR and H-1 NMR data has been utilized to confirm the structures of the products.