Dimethyl Sulfoxide → HCID 21907571, compound

Participants

Reaction Steps

A solution of compound 1 (273 mg, 1.0 mmol), dry DMSO (3 mL), dry Ac2O (2 mL), and dry TEA (1 mL) was stirred overnight at room temperature. The reaction mixture was then diluted with water and extracted three times with EtOAc. The combined organic phases were washed with saturated NaHCO3 and brine, dried with Na2SO4, concentrated, and purified by column chromatography using 10:90:EtOAc:Hexane to give a yellow solid (245 mg, 78%): mp 126-127° C. 1HNMR (CDCl3, δ TMS): 0.91 (t, 3H), 1.38 (t, 3H), 1.88 (s, 3H), 1.90 (m, 2H), 2.21 (t, 2H), 2.78 (m, 2H), 2.87 (q, 2H), 4.01 (t, 2H), 4.14 (m, 2H), 7.02-7.37 (m, 3H, Ar—H), 7.71 (br, 1H, NH). MS−: m/z 350 (MCl−), 314 ([M−H]−). Anal. (C19H25NO3): C, H, N.

Provenance & Evidence