N-(2-mercaptopropanoyl)thiazolidine-4-carboxylic acid → HCID 13599166, compound

Participants

Reaction Steps

Polyphosphoric acid (36 g) was added to N-(2-mercaptopropanoyl)thiazolidine-4-carboxylic acid (1.5 g, 6.78 mmol) and the mixture stirred at 50° for a period of 4 hours. The reaction mixture was then dissolved in water and extracted with ethyl acetate. The organic layer was washed with water and brine, dried over magnesium sulfate, filtered and concentrated to give 0.7 g of 6-methyl-1H,3H-thiazolo[4,3-c][1,4]thiazine-5,8-dione as a pale yellow oil.

Provenance & Evidence