Mn(III)-catalyzed Aerobic Oxidation of 3-Alkyl-4-hydroxy-1H-pyrrol-2 (5H)-ones in the Presence of 1,1-Diarylethenes. Synthesis of Stable 8-Aza1-hydroxy-2,3-dioxabicyclo[4.3.0]nonan-7-one Framework

Abstract

Twenty-two 3-alkyl-4-hydroxy-1H-pyrrol-2(5H)-ones were prepared and underwent Mn(III)-catalyzed aerobic oxidation in the presence of 1,1-diarylethenes to produce very stable crystalline 6-alkyl-8-aza-4, 4-diaryl-1-hydroxy-2,3-dioxabicyclo[4.3.0]nonan-7-ones in high yields. Full Text Link: http://doi.org/DOI 10.1002/jhet.1840