Chloroform → 8-Oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

Participants

Reaction Steps

By treating 4 g. of the product of Example 1 (c) with 4.5 g. of 7-aminocephalosporanic acid which has been dissolved in 100 ml. of anhydrous chloroform with 6 ml. of triethylamine according to the procedure of Example 1 (d), 2.8 g. of 3-[(acetyloxy)methyl]-7β-[[(4,5-dihydro-5-oxo-1,2,4-oxadiazol-3-yl)phenyl-acetyl[amino[-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid is obtained which decomposes between 95° and 100°.

Provenance & Evidence