Benzyl glyoxylate → HCID 70592921, compound

Participants

Reaction Steps

cis-2-Azidomethyl-3-benzyloxycarbonylamino-4-oxoazetidine is treated with zinc dust in 50% aqueous acetic acid as described in Preparation 7. Reaction of the crude reduction product with benzyl glyoxalate in methylene dichloride as described in the procedure of Example 1 gives N-(cis-3-benzyloxycarbonylamino-4-oxo-2-azetidinylmethyl)iminoacetic acid benzyl ester which, when treated with acetyl chloride according to the procedure of Example 1, gives 3-acetyl-6β-benzyloxycarbonylamino-7-oxo-1,3-diazabicyclo[3.2.0]heptane-2-carboxylic acid benzyl ester.

Provenance & Evidence