Water → HCID 10208935, compound

Participants

Reaction Steps

At ambient temperature, to a stirred solution containing 4-{4-[2-(2-butyl-benzofuran-3-yl)-ethyl]-phenoxysulfonyl}-2-hydroxy-benzoic acid (0.298 g, 0.602 mmol) and acetic anhydride (1 mL) In EtOAc (2 mL) was added 4-(dimethylamino)pyridine (3.7 mg, 0.0301mmol). The reaction was refluxed for 72 h. The reaction was cooled to ambient temperature, hydrolyzed with H2O (5 mL) and stirred for 24 h. The reaction was diluted with EtOAc and the organic phase washed sequentially with H2O (2×), brine (2×), dried (MgSO4) and concentrated. Purification on 2% H3PO4/MeOH treated silica gel, eluting with a 10 & 20% EtOAc/pet ether step gradient gave 0.122 g (76%) of the title compound as a yellow solid, mp 54-57° C. 1H NMR consistent. IR (KBr) 3400, 2900, 1700, 1380 and 1190 cm1. mass spectrum (−ESI) m/z 535 (M−H).

Provenance & Evidence