Hydrochloric Acid → HCID 13019673, compound

Participants

Reaction Steps

To a solution of 1.482 g of benzyl α-(3ξ-carbomethoxy-2-carbobenzoxy-7-oxo-4-oxa-2,6-diazabicyclo[3.2.0]heptan-6-yl)-α-isopropylideneacetate in 20 ml of acetone is added 5 ml of 0.6 M aqueous solution of sodium hydroxide under ice-cooling, and the mixture stirred for 45 minutes, then neutralized with 2 N hydrochloric acid and extracted with ethyl acetate. The extract is washed with water, dried and concentrated under reduced pressure to yield 1.27 g of benzyl α-(3ξ-carboxy-2-carbobenzoxy-7-oxo-4-oxa-2,6-diazabicyclo[3.2.0]heptan-6-yl)-α-isopropylideneacetate as crude product in 88.5% yield.

Provenance & Evidence