Diisopropylethylamine → Phenyl 4-(4-acetylpiperazin-1-yl)-2-fluorobenzyl(cyclobutyl)sulfamate

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Reaction Steps

To a solution of 3-methyl-1-(phenoxysulfonyl)-1H-imidazol-3-ium triflate (143 mg, 0.6 mmol) and 1-(4-(4-((cyclobutylamino)methyl)-3-fluorophenyl)piperazin-1-yl)ethanone (150 mg, 0.49 mmol) in DCM (20 mL) was added diisopropylethylamine (1 mL). The mixture was stirred at ambient temperature for 16 h. After the solvent was removed, the residue was purified by prep-HPLC to provide the title compound (67.3 mg, 29.6%). 1H NMR (400 MHz, DMSO-d6) δ 7.44-7.40 (m, 2 H), 7.34-7.24 (m, 4 H), 6.79-6.67 (m, 2 H), 4.46 (s, 2 H), 4.20-4.17 (m, 1 H), 3.73-3.66 (m, 4 H), 3.26-3.17 (m, 4 H), 2.19-2.15 (m, 2 H), 2.14 (s, 3 H), 2.03-1.98 (m, 2 H), 1.62-1.52 (m, 2 H). LCMS (ESI): m/z 483.9 [M+Na+].

Provenance & Evidence