Copper(II) Triflate–Sodium Dodecyl Sulfate Catalyzed Preparation of 1,2-Diphenyl-2,3-dihydro-4-pyridones in Aqueous Acidic Medium

Abstract

The reactions between N-benzylideneanilines and ­Danishefsky’s diene proceed smoothly in acidic aqueous medium in the presence of a catalytic amount of copper(II) triflate–sodium dodecyl sulfate [Cu(OTf)₂–SDS] to afford the corresponding 1,2-diphenyl-2,3-dihydro-4-pyridones in excellent yields of 84–95%. The aqueous solution containing the catalyst is recovered and reused without any loss in efficiency.

Key words

aza-Diels–Alder reaction - Lewis acid - aqueous medium - pyridones - copper(II) triflate

• References

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