Imidazole → HCID 22827924, compound

Participants

Reaction Steps

To a stirred solution of 0.039 g of 4-nitrobenzyl 3-acetylthio-6(S)-(1(R)-hydroxyethyl)-7-oxo-4-thia-1-azabicyclo[3,2,0]hept-2-en-2-carboxylate in a mixture of 1.5 ml of dioxan and 0.15 ml of water was added 0.0069 g of imidazole at room temperature. After 5 minutes the mixture was diluted with 3 ml of 1M hydrochloric acid and 5 ml of water, and then extracted into ethyl acetate. The combined organic extracts were washed with water and dried over magnesium sulphate. The resulting solution was evaporated to give a mixture of the 5R and 5S isomers of the title compound as a foam.

Provenance & Evidence