Sodium Hydroxide → HCID 54438664, compound

Participants

Reaction Steps

A solution of ethylthiosulfinate (8.4 g) in ethanol (50 ml) is added to an aqueous solution of 3-mercaptopropanoyl-L-proline (10 g) maintained at pH 6-7 by careful addition of sodium hydroxide. The mixture is stirred vigorously at room temperature until negative thiol reaction. The mixture is diluted with water, adjusted to pH 8 and extracted with ethyl acetate, the aqueous phase is acidified to pH 3 and extracted again with ethyl acetate. This latter extract is washed with water, dried and concentrated to dryness to yield 1-[3-(ethyldithio)propanoyl]-L-proline.

Provenance & Evidence