Synthesis of 2, 3-Benzo-1-oxaoctem-4-carboxylic Acid

Abstract

The recently reported syntheses of 2,3-benzo-fused-1-oxacephems^1,2,3 prompts us to report work done in our laboratories directed toward the synthesis of the methyl ester (6a)¹ and the title acid (6b)¹. The physical properties of these compounds, prepared by our method, correspond well with those reported.