Acetic Anhydride → HCID 54431541, compound

Participants

Reaction Steps

A mixture of 36 g (0.189 mole) of 3-carboxymethylrhodanine, 33.6 g (0.225 mole) of ethyl orthoformate and 225 ml of acetic anhydride was subjected to reactiqn under reflux for about 1 to 2 hours and then the reaction mixture was concentrated. A precipitate was formed by the addition of a small amount of chloroform to the residue. The precipitate was separated and recrystallized from ethyl acetate to give 29.2 g of 3-carboxymethyl-5-ethoxymethylidenerhodanine in the form of brownish white crystal (yield: 62.5 %).

Provenance & Evidence