A novel carbazole photoinitiator 1-(6-o-chloro-benzoyl-9-ethyl-9H-carbazol-3yl)-ethane-1-one oxime O-ethyrate is synthesized from carbazole by N-alkylation,Friedel-Crafts acylation,oximation and esterification.The structure is characterized by 1HNMR,13CNMR,UV and IR.This paper discuss the catalyst,temperature and time of oximation and gain the optimum reaction conditions:CH3COOK is base,temperature is 70℃ and time is 6h.The yield is 89.1%.
The novel carbazole derivative — 3-biacetyl-6-benzoyl-N-ethylcarbazole was synthesized through alkylation and Friedel-Crafts acylation from carbazole.The structure of the target compound was characterized by 1HNMR,13CNMR,UV,IR and elemental analysis.The optimal synthetical conditions for the monoacylation was achieved by carrying out orthogonal experiments:when the mole ratio of benzoyl chloride and N-ethyl-carbazole was1.2:1,while the mole ratio of catalyst and N-ethylcarbazole was 1.2:1 at 25℃for 3h.The yield was about 94.6%.
