1-[(4-chlorophenyl)methyl]piperidine

Conditions: temp:40.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 1-(4-chlorobenzyl)-4-{N-(2,2-diphenylethyl)aminomethyl}piperidine (0.084 mmol) in CH2Cl2 was treated with hippuric acid (1.1 equiv.), HBTU (1.1 equiv.), HOBt (1.1 equiv.). The reaction mixture was stirred at 40° C. for 24 h. General workup and preparative TLC (SiO2) afforded 4-{N-(N-benzoylglycyl)-N-(2,2-diphenylethyl)aminomethyl)}-1-(4-chlorobenzyl)piperidine (Compound No. 524) (8.5 mg, 17%): The purity was determined by RPLC/MS (98%); ESI/MS m/e 580 (M++H, C36H38ClN3O2).