Trifluoroborane-methyl sulfide → HCID 23653658, compound

Participants

Reaction Steps

Boron trifluoride dimethylsulfide (4.1 ml, 39 mmol) was added in multiportions over 5 hrs. to a suspension of 2-(5,6-Dimethoxybenzoimidazol-1-yl)-4-phenylthiazole-5-carboxylic acid ethyl ester (2.04 g, 4.99 mmol) in methylene chloride at RT. The mixture was stirred for an additional 40 mins. Ice water was added. Methylene chloride was removed, the residue was filtered, the solid was washed with water and a small amount of methanol, and then dried in air to give the product (1.72 g, yield 90%). 1H-NMR (DMSO-D6) 8.72 (s, 1H); 8.78-8.88 (m, 2H); 7.64 (s, 1H); 7.42-7.51 (m, 3H); 7.08 (s, 1H); 4.22 (q, 2H), 1.22 (t, 3H). MS M/z 382 (M+1)

Provenance & Evidence