Copper(II) Triflate-Sodium Dodecyl Sulfate Catalyzed Preparation of 1,2-Diphenyl-2,3-dihydro-4-pyridones in Aqueous Acidic Medium
Daniela Lanari, Oriana Piermatti, Ferdinando Pizzo*, Luigi Vaccaro*
*Laboratory of Green Synthetic Organic Chemistry, CEMIN - Dipartimento di Chimica, UniversitÓ di Perugia, via Elce di Sotto, 8, 06123 Perugia, Italy, Email: luigiunipg.it, pizzounipg.it
D. Lanari, O. Piermatti, F. Pizzo, L. Vaccaro, Synthesis, 2012, 44, 2181-2184.
DOI: 10.1055/s-0031-1291040 (free Supporting Information)
A reaction between N-benzylideneanilines and Danishefsky's diene proceeds smoothly in acidic aqueous medium in the presence of a catalytic amount of copper(II) triflate and sodium dodecyl sulfate to afford the corresponding 1,2-diphenyl-2,3-dihydro-4-pyridones in excellent yields. The aqueous solution containing the catalyst can be recovered and reused without any loss in efficiency.
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