cdi u201d of formula 5 is added to obtain a mixture preferably cdi is added in an amount of about 1 mole equivalent to about 1 2 mole equivalent per mole equivalent of 4 chloro 3 trifluoromethyl aniline of formula 3 more preferably about 1 mole equivalent per mole equivalent of 4 chloro 3 trifluoromethyl aniline of formula 3 preferably the mixture is then maintained to obtain a solution preferably the mixture is maintained at a temperature of about 20 u00b0 c to about 40 u00b0 c preferably 20 u00b0 c to about 35 u00b0 c more preferably 20 u00b0 c to about 30 u00b0 c most preferably the mixture is maintained at a temperature of about 30 u00b0 c the solution is stirred preferably for a period of about 8 hours to about 24 hours more preferably 10 hours to about 20 and most preferably 16 hours to about 24 especially about 16 hours preferably the stirring is done at a temperature of about 0 u00b0 c to about 30 u00b0 c more preferably at about 5 u00b0 c to about 15 u00b0 c during which time the compound of formula 4a precipitates the precipitated imidazole complex of imidazole 1 carboxylic acid 4 chloro 3 trifluoromethyl phenyl amide of formula 4a is then recovered the recovery may be done for example by filtering washing and drying under vacuum preferably drying.