Procedure for preparing derivatives of N- (carbamoildisustituido) -oxanilato. (Machine-translation by Google Translate, not legally binding)

摘要

Procedure for preparing derivatives of N- (carbamoyldisubstituted) -oxanylate of general formula: **(See formula)** where X and Y are independently selected from the group consisting of chlorine bromine and trifluoromethyl, n is both 0 and 1; m is both 0 and 1; R and R1 are independently selected from the group consisting of lower alkyl of C3 inclusive; R and R1 taken together are selected from the group consisting of **(See formula)** characterized in that it comprises reacting a suitably selected 1,3,3-dtrisubstituted urea with sodium hydride at a temperature between room temperature and 43ºC, and then reacting the resulting urea sodium salt with ethyloxalyl chloride. (Machine-translation by Google Translate, not legally binding)