Cerium??Catalyzed, Aerobic Oxidative Synthesis of 1, 2??Dioxane Derivatives from Styrene and Their Fragmentation into 1, 4??Dicarbonyl Compounds

…, T Werner, W Frey, J Christoffers

Index: Roessle, Michael; Werner, Thomas; Frey, Wolfgang; Christoffers, Jens European Journal of Organic Chemistry, 2005 , # 23 p. 5031 - 5038

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Citation Number: 16

Abstract

Abstract 1, 4-Diketones were prepared by cerium-catalyzed oxidative coupling of styrene with molecular oxygen and 1, 3-dicarbonyl compounds. This two-step sequence was performed as a one-pot procedure without isolation of the intermediate products. The first step is a metal-catalyzed radical reaction yielding 3-hydroxy-1, 2-dioxane derivatives being the cyclotautomers of initially formed 4-hydroperoxy ketones. In the second step of this ...