Patent ID: 7459553

Claim:
A process for preparing a 5H-dibenz[b,f]azepine-5-carboxamide of the formula: wherein R 1 , R 2 , R 3 and R 4 are the same or different and can be hydrogen, halogen, nitro, cyano, carboxyl, R, —CO(R), —OCO(R), —O(R), —N(R) 2 , —CON(R) 2 , and —COO(R), wherein R is selected from the group consisting of C 1 -C 10 alkyl, C 3 -C 10 cycloalkyl, C 2 -C 10 alkenyl, C 5 -C 10 cycloalkenyl, C 2 -C 10 alkynyl, and C 6 -C 20 aryl, and wherein the two R groups of —N(R) 2 and —CON(R) 2 can be the same or different, and wherein R 2 and R 3 can together form a bond; the process comprising reacting a 5H-dibenz[b,f]azepine of the formula wherein R 1 , R 2 , R 3 and R 4 have the aforementioned meanings, with one or more alkali or alkaline-earth cyanates and in the presence of one or more unsaturated dicarboxylic acid.