Diisopropylethylamine → HCID 68210885, compound

Participants

Reaction Steps

To a solution of 66 (20 mg, 0.08 mmol) in CH2Cl2 (10 ml) was added N,N-diisopropylethylamine (DIEA, 26 mg, 36 μL, 0.2 mmol), 4-dimethylaminopyridine (DMAP, 0.6 mg, 0.05 mmol). The 2,6-difluorobenzoyl chloride (15 mg, 0.08 mmol) was dropped into above solution. The mixture was stirred for 2 h at room temperature. The reaction was quenched with saturated NaHCO3 (20 ml) and extracted with EtOAc. The dicarboxamide was hydrolyzed with 1M NaOH in THF and MeOH (1:1). The product was purified by HPLC and afforded 67 (20.5 mg, 65%) as yellow solid. LC-MS: calcd. for C21H15F2N3OS: 396 (M+1). 1H NMR (DMSO-d6) δ 3.86 (s, 3H), 6.77 (s, 1H), 7.08-7.10 (m, 1H), 7.26-7.29 (m, 2H), 7.42 (dd, 1H, J=0.88, 3.5), 7.42 (dd, 1H, J=0.88, 4.9), 7.59 (d, 2H, J=8.6), 7.62-7.63 (m, 1H), 7.83 (d, 2H, J=8.6), 11.00 (s, 1H).

Provenance & Evidence