反应详情

A solution of 4.24 g of methyl α-(3ξ-carbobenzoxy-2-phenylacetyl-7-oxo-4-oxa-2,6-diazabicyclo[3.2.0]heptan-6-yl)-α-isopropylideneacetate dissolved in 64 ml of tetrahydrofuran is catalytically hydrogenated on 1.3 g of 5% palladium carbon under atmospheric pressure. The catalyst is removed by filtration and the filtrate is condensed to yield 3.38 g of methyl α-(3ξ-carboxy-2-phenylacetyl-7-oxo-4-oxa-2,6-diazabicyclo[3.2.0]heptan-6-yl)-α-isopropylideneacetate as crude product in quantitative yield.

1. customThe catalyst is removed by filtration
2. customcondensed