1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → 2-((N-benzoylleucyl)aminomethyl)-1-(4-chlorobenzyl)pyrrolidine

Participants

Reaction Conditions

Reaction Steps

A solution of 2-(aminomethyl)-1-(4-chlorobenzyl)pyrrolidine (22.5 mg, 0.10 mmol) and dl-benzoylleucine (0.12 mmol) in CHCl3 (1 mL) was treated with EDCI (23 mg), HOBt (16.2 mg) and Et3N (15.2 μL), and stirred at 25° C. for 16 h. The reaction mixture was diluted with CH2Cl2 (0.5 mL), washed with 2 N aqueous NaOH solution (2×0.75 mL), dried by filtration through a PTFE membrane and concentrated to afford 2-((N-benzoylleucyl)aminomethyl}-1-(4-chlorobenzyl)pyrrolidine (compound No. 344) (74 mg, quant): The purity was determined by RPLC/MS (85%); ESI/MS m/e 442 (M++H, C25H32ClN3O2).

Provenance & Evidence