Hydrochloric Acid → HCID 9809334, compound

Participants

Reaction Steps

To a solution of HCl.H-Thr-D-Trp(CHO)-Phe-NMeBzl (2.29 g) in methylene chloride (30 ml), were added triethylamine (747 mg) and Ac2O (377 mg) at -20° C. The reaction mixture was stirred for 45 minutes at the same temperature, and washed successively with water, diluted sodium hydrogencarbonate solution, water, 0.5N hydrochloric acid, and sodium chloride solution and dried over magnesium sulfate. After concentration, the residue was dissolved in 65% aqueous ethanol (45 ml) under heating, and the solution was left standing overnight at room temperature. The resulting needles were filtered, washed with 65% aqueous ethanol, and dried to give Ac-Thr-D-Trp(CHO)-Phe-NMeBzl (1.92 g).

Provenance & Evidence