Triethylamine → L-norvaline, N-[1-(2-adamantan-1-yl-2-oxoethyl)-L-prolyl] benzylamide

Participants

Reaction Steps

Using the procedure described previously, a solution of 1-(2-adamantan-1-yl-2-oxoethyl) L-proline (155 mg, 0.53 mmol, 1.0 eq), L-norvaline N-benzylamide (220 mg, 1.07 mmol, 2.0 eq) and dichloromethane (1.0 mL), was treated with triethylamine (446 uL, 3.2 mmol, 6.0 eq), and a 50% solution of 1-n-propylphosphonic acid cyclic anhydride in dichloromethane (680 uL, 1.07 mL, 2.0 eq), to provide 372 mg (70%) of L-norvaline, N-[1-(2-adamantan-1-yl-2-oxoethyl)-L-prolyl] benzylamide.

Provenance & Evidence