Dicyclohexylcarbodiimide → HCID 54337559, compound

Participants

Reaction Steps

2-Thiazolidinecarboxylic acid methyl ester (C.A. 53, 12, 281) (4.4 g.) and 3-hydroxybenzotriazole (4.0 g.) are dissolved in dichloromethane (40 ml.) and the solution is stirred and chilled in an ice bath. Dicyclohexylcarbodiimide (6.2 g.) dissolved in dichloromethane (15 ml.) is added followed immediately by a solution of 3-acetylthio-2-methylpropanoic acid (4.9 g.) in dichloromethane (5 ml.). After fifteen minutes stirring in the ice bath, and sixteen hours at room temperature, the precipitate is filtered off and the filtrate is washed neutral. The organic layer is dried and concentrated to dryness in vacuo to give 3-(3-acetylthio-2-methylpropanoyl)-2-thiazolidinecarboxylic acid methyl ester.

Provenance & Evidence