Ammonium Chloride → HCID 118071140, compound

Participants

Reaction Steps

To a stirred solution of Intermediate 350E (0.43 g, 1.026 mmol) in DMF (4 mL) was added NH4Cl (0.274 g, 5.13 mmol), HATU (0.780 g, 2.051 mmol) and DIPEA (0.537 mL, 3.08 mmol) and the resulting solution was stirred at RT for 16 h. The reaction mixture was diluted with water (50 mL) and extracted with EtOAc (3×25 mL) The combined organic layer was washed with brine, dried over Na2SO4, filtered and the filtrate concentrated. The residue was triturated with diethyl ether, filtered and dried to afford Intermediate 350F as an off-white solid (0.4 g, 89%). MS(ES): m/z=419 [M+H]+; 1H NMR (400 MHz, chloroform-d) δ ppm 6.56 (br. s., 1H), 5.54 (br. s., 1H), 4.96 (br. s., 2H), 4.04 (br. s., 2H), 1.44 (s, 9H), 1.18 (m, 2H), 0.97-0.84 (m, 2H).

Provenance & Evidence