Hydrochloric Acid → HCID 131713148, compound

Participants

Reaction Steps

A mixture of 7-[(2-formamidothiazol-4-yl)-glyoxylamido]3-methylthiomethyl-3-cephem-4-carboxylic acid (3.0 g) and conc. hydrochloric acid (3 ml) in methanol (50 ml) was stirred at ambient temperature for 2 hours. The reaction mixture was adjusted to pH 5-6 with an aqueous solution of sodium bicarbonate and then concentrated under reduced pressure. The precipitated crystals in the concentrate were collected by filtration to give 7-[(2-aminothiazol-4-yl)glyoxylamido]-3-methylthiomethyl-3-cephem-4-carboxylic acid (1.1 g).

Provenance & Evidence