Acetic Acid → N-Cbz-d-alanine

Participants

Reaction Conditions

Reaction Steps

A mixture of 2-amino-4′-bromoacetophene hydrochloride (10.0 g, 40 mmol), sodium acetate (16.4 g, 200 mmol), acetic acid (11.5 mL, 200 mmol) and compound 2 (19.2 g, 80 mmol) in dioxane (70 mL) was stirred at 65° C. until TLC show no compound 2 left (about 2 h). The reaction mixture was carefully neutralized with saturated NaHCO3 solution, and extracted with ethyl acetate. The organic solution was dried over Na2SO4 and concentrated. Purification with flash column chromatography (EtOAc:Hexs 1:1) gave product 3 (9.11 g, 79%) as white solid.

Provenance & Evidence