δ-Sultone Formation Through Rh-Catalyzed C−H Insertion
作者:Scott A. Wolckenhauer、A. Sloan Devlin、J. Du Bois
DOI:10.1021/ol701950d
日期:2007.10.1
Rhodium-catalyzed reactions of sulfonate ester derivatives are biased strongly toward 1,6-insertion and thus offer a general method for assembling delta-sultones. Two protocols for staging this cyclization reaction are described, which capitalize on the unique ability of either diazo or iodonium ylide intermediates to form Rh-carbene species. The value of these heterocycles for fine chemicals synthesis