prepared by stirring under nitrogen a solution of 2 amino 5 chlorobenzophenone in an organic solvent such as benzene methylene chloride chloroform or the preferred solvent ethyl acetate with a slight molar excess of 3 n naoh aqueous solution maintained at a temperature of about 5 u00b0 to 25 u00b0 c preferably about 15 u00b0 c this is followed by the dropwise addition of a slight molar excess of chloroacetyl chloride during a period of about 15 minutes maintaining the reaction temperature at 15 u00b0 25 u00b0 c the reaction time is from 1 to 4 hours with the reaction substantially complete in about 1 5 hours in a preferred process 2 chloroacetamido 5 chlorobenzophenone dissolved in methylene chloride is contacted at room temperature under nitrogen with about 1 5 to 2 molar equivalents of thionyl chloride and about 3 molar equivalents of pyridine the stirred mixture is then heated under gentle reflux for about 18 to 20 hours at 40 u00b0 42 u00b0 c in place of methylene chloride chloroform at a reaction temperature of about 60 u00b0 c or benzene at 80 u00b0 c may be used phosgene or phosphorus pentachloride may be used in place of thionyl chloride to the crude methylene chloride solution of 2 1 39 chloroimino 2 39 chloromethyl 5 chlorobenzophenone obtained as described above is added a slight molar excess of hydroxylamine hydrochloride followed by 2 3 molar equivalents of pyridine the solution is stirred at 25 u00b0 40 u00b0 c until the reaction is substantially complete 20 48 hours in place of methylene chloride chloroform at a reaction temperature of about 60 u00b0 c or benzene at 80 u00b0 c may be used 6 chloro 2 chloromethyl 4 quinazoline.