Dimethyl Sulfoxide → HCID 66749619, compound

Participants

Reaction Steps

A solution of oxalyl chloride (63.1 uL, 0.746 mmol) in methylene chloride (1.50 mL, 23.4 mmol) was cooled to −78° C. To this solution was added dimethyl sulfoxide (65.1 uL, 0.918 mmol) in methylene chloride (1.00 mL) dropwise. The reaction was stirred for 10 min under an atmosphere of Nitrogen. To this mixture was added a solution of N-{4-[4-[(4-chlorophenyl)(hydroxy)methyl]-5-(1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-1,2,4-triazol-3-yl)-2-thienyl]pyridin-2-yl}acetamide (319 mg, 0.574 mmol) in methylene chloride (1.50 mL) dropwise. In 1 hr, triethylamine (0.400 mL, 2.87 mmol) was added dropwise to the reaction and the resulting mixture was warmed to rt. In 1 hr, the solution was diluted with CH2Cl2 and washed with water. The aqueous layer was extracted with CH2Cl2(×2). The combined org layer was washed with NaHCO3(aq) saturated solution, dried, and concentrated to provide N-{4-[4-(4-chlorobenzoyl)-5-(1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-1,2,4-triazol-3-yl)-2-thienyl]pyridin-2-yl}acetamide as a yellow solid (325 mg, quantative). LCMS: (AA) 554, 556; 1H NMR (400 MHz, CDCl3) δ 8.56-8.47 (s, 1H), 8.32-8.24 (m, 1H), 8.11-8.03 (s, 1H), 8.03-7.92 (s, 1H), 7.87-7.77 (m, 2H), 7.63-7.57 (s, 1H), 7.42-7.32 (m, 3H), 5.37-5.32 (s, 2H), 3.53-3.40 (t, J=8.1 Hz, 2H), 2.27-2.19 (s, 3H), 0.94-0.80 (t, J=8.1 Hz, 2H), 0.02-−0.04 (s, 9H).

Provenance & Evidence