4-Methylmorpholine → HCID 131720287, compound

Participants

Reaction Steps

Using the procedure described above, a solution of L-isoleucine, N-[1-(carboxymethyl)-L-prolyl] benzylamide (0.124 g, 0.33 mmol, 1.0 eq), and N-methylmorpholine (43 uL, 40 mg, 0.40 mmol, 1.20 eq), in acetonitrile (3 mL) was treated with isobutyl chloroformate (45 uL, 47 mg, 0.35 mmol, 1.05 eq) followed by 4-phenylpiperidine (69 mg, 0.43 mmol, 1.3 eq). Workup as above provided 101 mg (59%) of L-isoleucine, N-[1-(2-(4-phenylpiperidyl)-2-oxoethyl)-L-prolyl] benzylamide.

Provenance & Evidence