Cyclodehydrations Leading to Indene Products Having N-Heterocyclic Substituents
作者:Kenneth N. Boblak、Douglas A. Klumpp
DOI:10.1021/jo5007416
日期:2014.6.20
In this Note, we describe superacid-promotedcyclodehydrationsleading to functionalized indenes. The product indenes are synthesized having N-heterocyclic substituents, including pyridyl, imidazolyl, pyrimdyl, and other groups. A mechanism is proposed involving dicationic, superelectrophilic intermediates. The protonated N-heterocyclic rings are shown to dramatically lower the LUMO energy level of