Sodium Bicarbonate → Sodium 6-ethyl-3-phenoxy-7-oxo-4-thia-1-azabicyclo[3,2,0]hept-2-ene-2-carboxylate

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Reaction Steps

A mixture of a solution of 306 mg of 4-nitrobenzyl 6-ethyl-3-phenoxy-7-oxo-4-thia-1-azabicyclo[3,2,0]hept-2-ene-2-carboxylate in dioxan and 60 mg of sodium bicarbonate in water, and 10% palladium/charcoal was hydrogenated at 50 psi at 25° for 60 minutes. The mixture was then filtered through Celite, and lyophilised to yield 216 mg of the title compound as a pale yellow crystalline solid (96% of the theoretical yield).

Provenance & Evidence