Acetic Acid → HCID 88734350, compound

Participants

Reaction Steps

2,2,2-Trichloroethyl 2-methyl-7-(2-formyloxy-2-phenylacetamido)-3-cephem-4-carboxylate (1.58 g), zinc powder (1.5 g) and glacial acetic acid (1.5 ml) were added to anhydrous dimethylformamide (15 ml), and the mixture was stirred for 1 hour under ice-cooling. After the reaction, zinc powder was filtered off, and the filtrate was poured into a mixture of 5% hydrochloric acid (30 ml) and ethyl acetate (30 ml) and then extracted. The aqueous layer was further extracted twice with ethyl acetate (30 ml). The ethyl acetate layer was combined, and the combined solution was washed with 50% hydrochloric acid and water, and then dried over magnesium sulfate. After the solvent was distilled off under reduced pressure, the residue was pulverized by adding isopropyl ether, followed by filtration, and dried to give amorphous 2-methyl-7-(2-formyloxy-2-phenylacetamido)-3-cephem-4-carboxylic acid (1.0 g).

Provenance & Evidence