Trifluoroacetic acid → 3,5-Bis-phenyl-4-hydroxybenzoic acid methyl ester

Participants

Reaction Steps

At ambient temperature, to a stirred solution of 2′-(2-methoxyethoxymethoxy)-[1,1′;3′,1″]terphenyl-5′-carboxylic acid methyl ester (1.608 g, 4.098 mmol) in CH2Cl2 (16.08 mL) was added portionwise trifluoroacetic acid (16.08 mL). After 1 h, the reaction was diluted with ether (100 mL), washed sequentially with H2O (3×), with sat. aq. NaHCO3 (3×), with brine (3×), dried (MgSO4) and concentrated to give 1.240 g (99%) of the title compound as a white solid. 1H NMR (DMSO-d6) δ 3.83 (s, 3H), 7.39-7.50 (m, 6H), 7.55-7.57 (m, 4H), 7.78 (s, 2H), 9.28 (s, 1H).

Provenance & Evidence