Hydrochloric Acid → HCID 13362788, compound

Participants

Reaction Steps

Thiourea (663 mg), sodium bicarbonate (732 mg) and water (20 ml) were added to a stirred solution of 7-[2-(2-bromoacetyl)acetamido]-3-cephem-4-carboxylic acid (2.11 g) in tetrahydrofuran (20 ml) under ice-cooling and stirred at the same temperature for an hour. After the resultant solution was adjusted to pH 4.0 with dilute hydrochloric acid, the precipitates were collected by filtration, washed with water and dried over phosphorus pentoxide under reduced pressure to give 7-[2-(2-amino-4-thiazolyl)acetamido]-3-cephem-4-carboxylic acid (1.01 g).

Provenance & Evidence