Water → HCID 67106795, compound

Participants

Reaction Steps

Oxalyl chloride (0.61 ml, 6.99 mmol) was added dropwise to a stirred solution of 3-[(methyloxy)carbonyl]-4-[(phenylmethyl)oxy]benzoic acid (may be prepared as described in Description 49; 400 mg, 1.40 mmol) in dichloromethane (10 ml) and dimethylformamide (3 drops) at room temperature. The mixture was stirred at room temperature for 1 h. The solvent was then removed and the residue was dissolved in dichloromethane (5 ml). This mixture was added to a solution of 1-methylpiperazine (525 mg, 5.24 mmol) in dichloromethane (5 ml). The mixture was stirred at room temperature for 2 h. Water (60 ml) was added to the mixture, which was then extracted with dichloromethane (3×60 ml). The organic phase was washed with saturated brine (50 ml), dried over sodium sulfate and evaporated in vacuo to give the crude product. The crude product was loaded onto a silica gel (200 g) column and eluted with dichloromethane/methanol=50:1 to yield the title compound as a colourless oil. 450 mg.

Provenance & Evidence