Synthesis of an <i>ortho</i>-Triazacyclophane: <i>N</i>,<i>N</i>′,<i>N</i>′′-Trimethyltribenzo-1,4,7-triazacyclononatriene
作者:Andria M. Panagopoulos、Matthias Zeller、Daniel P. Becker
DOI:10.1021/jo1017074
日期:2010.11.19
N,N',N ''-Trimethyltribenzo-1,4,7-triazacyclononatriene has been synthesized via sequential palladium-catalyzed Buchwald-Hartwig N-arylation reactions affording the 9-membered triaza o-cyclophane in 35% overall yield An X-ray crystal structure shows the new cyclophane to have a C-2-symmetric saddle conformation, as compared to the crown conformation exhibited by the related carbocyclic cyclotriveratrylene (CTV)