反应详情

Using an adaptation of the method described in Procedure 15, substituting 2-(4-fluorophenoxy)-terephthalic acid dimethyl ester, 1e for 2-(2-methoxyphenoxy)-terephthalic acid dimethyl ester, 1c, the title compound 7-fluoro-9-oxo-9H-xanthene-3-carboxylic acid methyl ester, 2e was obtained. MS m/z (MH+) 272.9.