反应详情

Using an adaptation of the method described in Procedure 3, substituting 4-bromo-2-(2-methoxy-phenoxy)-benzoic acid, 2k for 4-bromo-2-phenoxybenzoic acid, 2a, the title compound 3-bromo-5-methoxy-xanthen-9-one, 3k was obtained. MS m/z (MH+) 304.8, 306.7.