Water → 21891-56-5

Participants

Reaction Steps

L-Cysteine hydrochloride (8.00 g, 45.6 mmol), pyridoxal hydrochloride (8.80 g, 43.25 mmol), and sodium hydrogen carbonate (7.60 g, 90.5 mmol) were added to a mixed solvent of water (60 ml) and ethanol (120 ml), and the mixture was at stored −20° C. for 2 days. The precipitated solid was collected by filtration, and dried under reduced pressure to give 2-[3-hydroxy-5-(hydroxymethyl)-2-methylpyridin-4-yl]thiazolidine-4-carboxylic acid as a pale-yellow solid (10.73 g).

Provenance & Evidence