Hydrochloric Acid → HCID 57529644, compound

Participants

Reaction Steps

1.8 mL HCl (3.2 M) were added to a solution of 180 mg (0.21 mmol) of (R)-1-(3,5-dibromo-benzyl)-2-[4-(1-tert-butoxy-carbonyl-piperidin-4-yl)-piperazin-1-yl]-2-oxo-ethyl 4-(2-oxo-1,2,4,5-tetrahydro-1,3-benzodiazepin-3-yl)-piperidine-1-carboxylate (Example 64) in 2 mL water and the reaction mixture was stirred for 3 h at RT. The mixture was combined with 25 mL EtOAc and 20 mL 17% Na2CO3 solution, the organic phase was separated off, the aqueous phase was extracted again with 25 mL EtOAc, the combined organic phases were washed with 10 mL saturated NaCl solution and dried over Na2SO4. After the desiccant and solvent had been eliminated the residue was suspended in diethyl ether, the organic phase was decanted off and the residue was dried.

Provenance & Evidence