ON THE SYNTHESIS AND ISOLATION OF CHLOROCARBAZOLES OBTAINED BY CHLORINATION OF N-SUBSTITUTED CARBAZOLES

Chloro derivatives of N-methylcarbazole (1), N-phenylcarbazole (2), N- acetylcarbazole (3), N-benzoylcarbazole (4) and 2-methoxy-N-methylcarb azole are synthesized. They are compounds 1a, 1b, 1c, 1d, 1e, 2a, 2b, 3a, 3b, 3c, 3d, 4a, 4b, 5a, 5b, 5c, 5d and 5e. Some of them are descri bed for the first time. By using semiempirical PM3 method theoretical substituent effects on the chlorinating reaction are calculated. A chl orination mechanism of carbazoles and N-substituted carbazoles are com pared.