Diisopropylethylamine → HCID 11965613, compound

Participants

Reaction Conditions

Reaction Steps

CH3SO2NHNH2 (25.5 mg, 1.5 equiv) and i-Pr2NEt (26.5 μL, 1 equiv) were added to a solution of 2-(4-chloro-phenoxycarbonylamino)-5-(1-methyl-1H-pyrrol-2-yl)-4-trifluoromethyl-benzoic acid methyl ester (70 mg, 0.155 mmol) in dioxane (2 mL). The mixture was stirred for 2 h (TLC control) at 95° C. CH3SO2NHNH2 (25.5 mg, 1.5 equiv) and i-Pr2NEt (26.5 μL, 1 equiv) were then added. The mixture was stirred for 48 h at 95° C. The mixture was evaporated to dryness. The crude product was purified by column chromatography (silica gel 60, EtOAc/hexanes 7/3) to give N-[6-(1-methyl-1H-pyrrol-2-yl)-2,4-dioxo-7-trifluoromethyl-1,4-dihydro-2H-quinazolin-3-yl]-methanesulfonamide (50 mg, 80%) as a yellow solid. ESI-MS: m/z 420 [M+NH4]+, rt: 4.83 min. 1H-NMR (DMSO-d6, 400 MHz) 7.91 (s, 2H), 7.57 (s, 1H), 7.54 (s, 1 H), 3.88 (s, 3 H), 3.14 (s, 3H).

Provenance & Evidence