Calcium Carbonate → HCID 67265060, compound

Participants

Reaction Steps

To a mixture of methyl 3-amino-5-phenylthiophene-2-carboxylate (2.33 g, 10 mmol) and phenyltrimethylammonium tribromide (9.4 g, 25 mmol) in dichloromethane (25 mL) and methanol (25 mL) was added calcium carbonate (4.03 g, 40 mmol) and the mixture stirred overnight. The solid was filtered off and the filtrate concentrated. The residue was purified by flash chromatography on silica gel using 1:10 ethyl acetate/hexanes to give 2.75 g of the title compound. 1H NMR (DMSO-d6) δ 7.62-7.65 (m, 2H), 7.47-7.51 (m, 3H), 3.80 (s, 3H).

Provenance & Evidence