the reaction is complete the formed precipitate is filtered off the filtrate is evaporated to dryness and the residue after having been converted to the acid addition salt can be purified by recrystallization from a suitable solvent e g ethanol the 2 halomethyl 5 phenyloxazoles ii starting materials can be prepared by the condensation of a phenylacylamine with a haloacetyl halide followed by cyclization of the obtained n phenacylhaloacetamide the following reaction equation illustrates this method of preparation str9 in the above formulas r 1 and x are as defined herein above the condensation of the phenylacylamine vii with the haloacetyl halide viii is carried out in a suitable solvent e g benzene water in the presence of a base such as sodium hydroxide at a temperature of 0 u00b0 c to 50 u00b0 c for a period of 1 to 5 hours a convenient method of isolation comprises extraction of the product with a water immiscible solvent e g benzene followed by removal of the solvent the resultant product can be used in this crude state for the subsequent reaction or can be recrystallized from an appropriate solvent e g ethanol the cyclization of the n phenacylhaloacetamide ix to the 2 halomethyl 5 phenyloxazole ii is carried out in a suitable.