Oxoammonium Salt Oxidations of Alcohols in the Presence of Pyridine Bases
作者:James M. Bobbitt、Ashley L. Bartelson、William F. Bailey、Trevor A. Hamlin、Christopher B. Kelly
DOI:10.1021/jo402519m
日期:2014.2.7
4-acetylamino-2,2,6,6-tetramethylpiperidine-1-oxoammonium tetrafluoroborate) of alcohols containing a β-oxygen atom in the presence of pyridine yield dimeric esters, while in the presence of 2,6-lutidine the product is a simple aldehyde. The formation of a betaine between pyridine and an aldehyde is presented to explain this disparity in reactivity. The betaine is oxidized by the oxoammonium salt to