Synthesis, Properties, and Two-Dimensional Adsorption Characteristics of 5-Amino[6]hexahelicene
作者:Maarten W. van der Meijden、Edith Gelens、Natalia Murillo Quirós、Javier D. Fuhr、J. Esteban Gayone、Hugo Ascolani、Klaus Wurst、Magalí Lingenfelder、Richard M. Kellogg
DOI:10.1002/chem.201502798
日期:2016.1.22
A convergent synthesis of racemic 5‐amino[6]hexahelicene is described. Cross‐coupling reactions are used to assemble a pentacyclic framework, and a metal‐catalyzed ring‐closure comprises the final step. The enantiomers were separated by means of chromatography and the absoluteconfigurations were assigned by comparison of the CD spectra with hexahelicene. The t1/2 value for racemization at 210 °C was