Potassium Carbonate → HCID 12813290, compound

Participants

Reaction Steps

2.2 g of (4R)-3-[(2S)-2-mercaptopropanoyl]-4-thiazolidinecarboxylic acid and 2.8 g of potassium carbonate are dissolved in 50 ml of water. To this solution, 1.6 g of p-toluoyl chloride is added dropwise with stirring under ice-cooling. After the addition, the mixture is stirred under ice-cooling for 1 hour and at room temperature for additional 1 hour. The reaction solution is washed with ethyl acetate, and acidified with conc. hydrochloric acid to give crystals. The crystals (the titled compound) are collected by filtration, yield 3.3 g (97%), mp. 166°-166.5° C. (ethyl acetate), [α]D25 -148.6° (c=1.1, methanol).

Provenance & Evidence