p-Toluenesulfonic acid monohydrate → 2-(3-Nitro-6-fluorophenyl)-5-methylbenzoxazole

Participants

Reaction Steps

Prepared by the method of Example 15b), from N-(2-hydroxy-5-methylphenyl)-2-fluoro-5-nitrobenzamide (667 mg, 2.3 mmol) and p-toluenesulfonic acid monohydrate (961 g, 5.1 mmol) the subtitle compound was obtained (345 mg, 55%). 1H NMR (DMSO) δ 8.92(m, 1H), 8.50(m, 1H), 7.79(t, 1H), 7.67(d, 1H), 7.39(t, 1H), 7.28(d, 1H), 2.60(s, 3H).

Provenance & Evidence