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 2N 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