(4-Methoxyphenyl)boronic acid → HCID 178498915, compound

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4-Hydroxy-6-(4-methoxy-phenyl)-2-oxo-2H-thiochromene-3-carboxylic acid methyl ester was prepared from 6-bromo-4-hydroxy-2-oxo-2H-thiochromene-3-carboxylic acid methyl ester under conditions analogous to Example 7(a) using 4-methoxy-phenylboronic acid. 1H NMR (200 MHz, CDCl3): δ (ppm)=8.521 (s, 1H), 7.803-7.352 (m, 5H), 7.001 (s, 1H), 4.022 (s, 3H), 3.864 (s, 3H).

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