Dimethyl Sulfate → 5-Methoxy-2,3,6,7-tetrahydro-1,4-oxazepine

Participants

Reaction Conditions

Reaction Steps

To a solution of 1,4-oxazepan-5-one (0.091 g, 0.793 mmol) in DCM (2 mL) in a screw-cap vial was added dimethyl sulfate (0.1 g, 0.793 mmol) to give a colorless solution. The reaction was heated to 150° C. for 5 minutes. Potassium carbonate (200 mg) was added and the vial was capped and shaken. The reaction was filtered through a glass frit and solvent was removed under reduced pressure to give a clear oil (100 mg) that was used without further purification. LCMS (+ESI) m/z: 130.2 [M+H]+.

Provenance & Evidence