Ammonium Chloride → HCID 89544903, compound

Participants

Reaction Steps

To a solution of 5-[3-((R)-1-tert-Butoxycarbonylamino-propyl)-6-chloro-2-fluoro-benzoyl]-pyridine-2-carboxylic acid (Example 19)) in dichloromethane (8 ml) was added ammonium chloride (0.057 g, 0.65 mmol), DIPEA (0.137 mL, 0.78 mmol) and then HATU (0.06 g, 0.156 mmol) and the reaction stirred for 1 h. Further HATU totalling (0.12 g, 0.312 mmol) added. The reaction performed on a further (57 mg), both reactions combined and diluted with dichloromethane washed with water. The organic extract was dried (Na2SO4), filtered and concentrated. Purified by Prep HPLC to give {(R)-1-[3-(6-Carbamoyl-pyridine-3-carbonyl)-4-chloro-2-fluoro-phenyl]-propyl}-carbamic acid tert-butyl ester (0.042 g) MS: [M+H] 436 {(R)-1-[3-(6-Carbamoyl-pyridine-3-carbonyl)-4-chloro-2-fluoro-phenyl]-propyl}-carbamic acid tert-butyl ester (0.042 g, 0.137 mmol) treated with saturated HCl/EtOAc stirred at ambient for 1 hour, precipitate filtered and washed with ether to give 5-[3-((R)-1-amino-propyl)-6-chloro-2-fluoro-benzoyl]-pyridine-2-carboxylic acid amide (0.025 g).

Provenance & Evidence