Tetrahedron letters

The conversion of α-bromo-β-dicarbonyls to vicinal tricarbonyls using dimethyldioxirane and base

SJ Coats, HH Wasserman

Index: Coats, Steven J.; Wasserman, Harry H. Tetrahedron Letters, 1995 , vol. 36, # 42 p. 7735 - 7738

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Citation Number: 55

Abstract

Vicinal tricarbonyls are prepared from α-bromo-β-dicarbonyl precursors by base promoted oxygen transfer from dimethyldioxirane. The α-bromo-β-dicarbonyls were prepared by the reaction of CuBr2 and [hydroxy (tosyloxy) iodo] benzene (Koser's reagent) with a β- dicarbonyl system.