Hydrochloric Acid → HCID 13468123, compound

Participants

Reaction Steps

(aaa) 38.9 g of methyl 3,3'-dithiobis-thiophene-2-carboxylate were suspended in 1500 ml of 1N sodium hydroxide solution and 700 ml of ethanol, whereupon the suspension was heated under reflux until the reaction finished. After cooling, in an ice-bath the mixture was acidified with 25 percent hydrochloric acid, whereby the product crystallized out. By recrystallization from water, there was obtained 3,3'-dithio-bis-thiophene-2-carboxylic acid as colorless crystals of m.p. 256°-257°.

Provenance & Evidence