反应详情

Using an adaptation of the method described in Procedure 15, substituting 2-o-tolyloxy-terephthalic acid dimethyl ester, 1h for 2-(2-methoxyphenoxy)-terephthalic acid dimethyl ester, 1c, the title compound 5-methyl-9-oxo-9H-xanthene-3-carboxylic acid methyl ester, 2h was obtained. MS m/z (MH+) 269.0.