Hydrochloric Acid → HCID 178502171, compound

Participants

Reaction Steps

[1-(2-{-4-[4′-(2-tert-Butoxycarbonylamino-acetyl)-biphenyl-4-yl]-1H-imidazol-2-yl}-pyrrolidine-1-carbonyl)-2-methyl-propyl]-carbamic acid methyl ester (107.0 mg, 0.177 mmol) was dissolved in DCM (1 mL) and HCl in dioxane (4M, 1 mL) was added and stirring at room temperature was continued. After 45 minutes, all volatiles were removed in vacuo. The crude material was used in the next step without further purification. The crude material was dissolved in DMF (0.6 mL) and DIEA (68.4 mg, 0.531 mmol) was added. A solution of racemic 1,3-dihydro-isoindole-1,2-dicarboxylic acid 2-tert-butyl ester (46.6 mg, 0.177 mmol), HATU (67.3 mg, 0.177 mmol) and DIEA (22.8 mg, 0.177 mmol) in DMF (0.4 mL) was added. The reaction was stirred at room temperature. After 15 minutes, the reaction was diluted with EtOAc and was washed with brine, saturated sodium bicarbonate solution, brine, and was dried over sodium sulfate. Filtration and removal of solvents in vacuo gave the crude material (147.8 mg), which was used in the next step without further purification.

Provenance & Evidence