Probing the mechanism of direct Mannich-type α-methylenation of ketoesters via electrospray ionization mass spectrometry
作者:Cíntia D. F. Milagre、Humberto M. S. Milagre、Leonardo S. Santos、Marcelo L. A. Lopes、Paulo J. S. Moran、Marcos N. Eberlin、J. Augusto R. Rodrigues
DOI:10.1002/jms.1173
日期:2007.10
Reactionspromoting direct Mannich-type alpha-methylenation of alpha, beta and gamma-ketoesters have been monitored via electrosprayionizationmass and tandem mass spectrometric experiments. Key intermediates of the catalytical cycle of this synthetically useful reaction have been intercepted and characterized. The mechanistic information provided by electrosprayionizationmassspectrometry/mass