Morpholine → Benzyl 6-(2,2,2-trifluoro-1-hydroxyethyl)-3-morpholino-1-azabicyclo[3.2.0]hept-2-en-7-one-2-carboxylate

Participants

Reaction Conditions

Reaction Steps

Morpholine (17.5 μl) is added to an ice-cold, stirring solution of benzyl 6-(2,2,2-trifluoro-1-hydroxyethyl)-3-toluenesulfonyloxy-1-azabicyclo[3.2.0]hept-2-en-7-one-2-carboxylate (51 mg) in anhydrous DMF (0.5 ml). The resulting solution is allowed to warm to room temperature (25° C.) and then stirred at room temperature for 4 hrs. Ethylacetate (10 ml) is added and the solution is washed with water (5×2 ml), pH 3 phosphate buffer, 5% NaHCO3, brine, dried with MgSO4, and filtered. Evaporation of the solvent in vacuo leaves benzyl 6-(2,2,2-trifluoro-1-hydroxyethyl)-3-morpholino-1-azabicyclo[3.2.0]hept-2-en-7-one-2-carboxylate.

Provenance & Evidence