... 0 1989 Pergamon Press plc PHOTO-FRIES REARRANGEnENTS IN N-SULPHONYL CARBAZOLES Amit Chakrabarti, Goutam K. Biswas and DP Chakraborty* Department of Chemistry, Bose Institute, Calcutta-700009, India ... Page 2. 5060 A CHAKRABARTI et (11 respectively from N-sulphonylcerbazoles l(a-cl constitute the examples of ... Car. = Cerbazole. ACKNDWLEDCEflENTS : The authors are thankful to Prof. B.0. Biswas, Direc- t 8 Institute for ...