Benzenesulfinic acid, sodium salt → Benzyl 2-(3-phenoxyacetamido-4-benzenesulfonylthio-2-azetidinon-1-yl)-3-methyl-3butenoate

Participants

Reaction Steps

A 362 mg quantity of benzyl 2-[3-phenoxyacetamido-4-(6-nitrobenzothiazol-2-yldithio)-2-azetidinon-1-yl]-3-methyl-3-butenoate and 112 mg of benzenesulfonyl cyanide were dissolved in 3.5 ml of acetone. To the solution was added 3 mg of sodium benzenesulfinate and the mixture was reacted at room temperature for 2 hours. The same subsequent procedure as in Example 5 was followed, producing benzyl 2-(3-phenoxyacetamido-4-benzenesulfonylthio-2-azetidinon-1-yl)-3-methyl-3-butenoate in a yield of 81%. The NMR spectrum data of the compound thus obtained were identical with those of the compound produced in Example 13.

Provenance & Evidence