Anodic coupling of carboxylic acids to electron-rich double bonds: A surprising non-Kolbe pathway to lactones
作者:Robert J Perkins、Hai-Chao Xu、John M Campbell、Kevin D Moeller
DOI:10.3762/bjoc.9.186
日期:——
Carboxylic acids have been electro-oxidatively coupled to electron-rich olefins to form lactones. Kolbe decarboxylation does not appear to be a significant competing pathway. Experimental results indicate that oxidation occurs at the olefin and that the reaction proceeds through a radical cation intermediate.
Oxidative Cyclization Reactions: Amide Trapping Groups and the Synthesis of Furanones
作者:John D. Brandt、Kevin D. Moeller
DOI:10.1021/ol051296m
日期:2005.8.1
Intramolecular anodic coupling reactions involving ketene dithioacetal radicalcations and amide trapping groups have been examined. The reactionsgenerate furanone products and benefit greatly from the addition of water to the reaction medium. The cyclization reactions lead to products having stereochemistry that is directly analogous to oxidative cyclization reactions utilizing ketene dithioiacetal