Ammonium Chloride → HCID 51356692, compound

Participants

Reaction Steps

To a mixture rac-[(2S,3S,4S)-2-(3-chloro-2-fluoro-phenyl)-3-(4-chloro-2-fluoro-phenyl)-3-cyano-4-(2,2-dimethyl-propyl)-pyrrolidin-1-yl]-acetic acid (23.0 mg, 0.048 mmol, Example 51) in N,N-dimethyl formamide (2.5 mL) was added DIPEA (44.5 mg, 0.344 mmol) and HATU (29.6 mg, 0.078 mmol). After it was stirred at rt for 22 min, ground ammonium chloride (6.4 mg, 0.12 mmol,) was added. After 3 hrs the reaction mixture was extracted with EtOAc, and washed with water, 10% ammonium chloride, saturated sodium bicarbonate, water, and saturated NaCl. The organic phase was separated, and dried over Na2SO4. The reaction mixture was then purified by flash column to give rac-2-[(2S,3S,4S)-2-(3-chloro-2-fluoro-phenyl)-3-(4-chloro-2-fluoro-phenyl)-3-cyano-4-(2,2-dimethyl-propyl)-pyrrolidin-1-yl]-acetamide (3.7 mg, 16.1%). HRMS (ES+) m/z Calcd for C24H25Cl2F2N3O+Na [(M+Na): 502.1235; Found: 502.1235.

Provenance & Evidence