HCID 12912423, compound → HCID 86738027, compound

Participants

Reaction Steps

(ci) 1.58 g (1.2 equivalents) of silver p-toluenesulphinate are added in portions, in the course of 10 minutes, to a solution of 3.25 g (5.0 mmols) of 2-[4-(benzthiazol-2-yldithio)-3-phenoxyacetamido-2-oxoazetidin-1-yl]-3-methylenebutyric acid p-nitrobenzyl ester in 200 ml of acetone/water, 8:1 (v/v). The suspension is stirred for one hour at room temperature, filtered and further processed as described in Example 1c). 2-[4-(p]Toluenesulphonylthio)-3-phenoxyacetamido-2-oxoazetidin-1-yl]-3-methylenebutyric acid p-nitrobenzyl ester is obtained in quantitative yield.

Provenance & Evidence