IMIDES: PART VIII*- PYROLYSIS AND PYROLYSIS-MASS SPECTRA OF N-HYDROXY-CYCLOHEX-4-ENE-1,2-DICARBOXIMIDE AND ITS DERIVATIVES

N-hydroxy-, N-aroyloxy-, and N-arylsulphonyloxy-cyclohex-4-ene-1,2-dicarboximides (I, IV and VI) undergo pyrolysis to give phthalimide (II); mixture of (II), aromatic acids; and mixture of (II), arylsulphonic acids, respectively. N-aryl-cyclohex-4-ene-1,2-dicarboximides (VIII) give on pyrolysis N-aryl-phthalimides (IX). Pyrolysis-mass spectra of 9I), (IVa) and (Via) was investigated.  It was previously [3] stated that N-hydroxy-phthalimide, and its derivatives give on pyrolysis phthalimide. In the present investigation pyrolysis and pyrolysis-mass spectra of N-hydroxy-cyclohex-4-ene-1,2-dicarboximide and its derivatives were investigated 

M O ORABI ,N F ALY ,N Y ALY ,S A ESSAWY ,