Ammonia → HCID 508728, compound

Participants

Reaction Steps

The chloroform (0.4 mL) solution of 3,4-difluorobenzoyl chloride (0.060 mmol) was added to the chloroform (1.0 mL) solution of the (R)-1-(4-chlorobenzyl)-3-(glycylamino)pyrrolidine (0.050 mmol) and triethylamine (0.070 mmol). The reaction mixture was stirred at room temperature for 2.5 hours, and then mixed with a (aminomethyl)polystyrene resin (1.04 mmol/g, 50 mg, 50 mmol). The mixture was stirred at room temperature for 12 hours, and filtered. The resin was washed with dichloromethane (0.5 mL). The filtrate and the washings were combined and mixed with dichloromethane (4 mL). The solution was washed with a 2M NaOH aqueous solution (0.5 mL), and then concentrated to obtain the (R)-1-(4-chlorobenzyl)-3-[{N-(3,4-difluorobenzoyl)glycyl}amino]pyrrolidine (Compd. No. 69) (7.8 mg, 38%): the purity was determined with RPLC/MS (>99%); ESI/MS m/e 408.0 (M++H, C20H20ClF2N3O2).

Provenance & Evidence