Acetic Acid → 5-({1-[(Carboxymethyl)imino]-1-hydroxy-3-sulfanylpropan-2-yl}imino)-5-hydroxy-N-(1-hydroxyethylidene)norvaline

Participants

Reaction Steps

A solution of glutathione (1 g, 3.25 mmole) in 10 ml of water was added over 1 hr to a mixture of acetic anhydride (10 ml) and acetic acid (10 ml) at room temperature. After the addition was complete, the reaction mixture was chilled on ice. Additional acetic anhydride (5 ml) was added and the reaction mix was stirred while it gradually warmed to room temperature overnight. The reaction mixture was treated with 300 ml of ethyl ether and cooled overnight to obtain crystallized product. A white solid was obtained by filtering the reaction mix, and washing with more ether. More crystallized product was generated in the filtrate. The filtration and washing were repeated a second time and the white solids were combined and air-dried (585 mg, yield 51.5%).

Provenance & Evidence