p-Anisoyl chloride → HCID 57043850, compound

Participants

Reaction Steps

To a solution of 4-[[(2,6-dichlorophenyl)carbonyl]amino]-N-[[1-(2-aminoethyl)cyclopentyl]-carbonyl]-L-phenylalanine methyl ester (0.2 mmol, 101 mg) and 4-methoxybenzoyl chloride (0.25 mmol, 52.1 mg) in dichloromethane (1 mL) was added DIPEA (0.3 mmol, 38.7 mg) at room temperature. The reaction mixture was stirred for 15 h at room temperature and then diluted with 20 mL of dichloromethane. The dichloromethane layer was washed successively with water (20 mL) and brine solution (20 mL) and was dried over anhydrous magnesium sulfate. Filtration of the drying agent and concentration of the solvent afforded a crude product which was purified by revesrsed phase HPLC to obtain 0.1 g (78%) of a yellow syrup. HR MS (C33H35Cl2N3O6): Obs. mass, 662.1778. Calcd. mass, 662.1801 (M+Na).

Provenance & Evidence