Bidentate Lewis Acids for the Activation of 1,2-Diazines - A New Mode of Catalysis
作者:Simon N. Kessler、Markus Neuburger、Hermann A. Wegner
DOI:10.1002/ejoc.201100335
日期:2011.6
BidentateLewisacids were applied as catalysts for the inverse-electron-demand Diels–Alder (IEDDA) reaction of 1,2-diazines. The concept of catalysis is based on the coordination of the bidentateLewisacid to both nitrogen atoms of the 1,2-diazine moiety, thereby reducing the electron density and lowering the energy of the LUMO. This should, according to frontier molecular orbital (FMO) theory, facilitate