Improved synthesis of functionalized mesogenic 2,6-bisbenzimidazolylpyridine ligands
作者:Blayne M. McKenzie、Adriane K. Miller、Rudy J. Wojtecki、J. Casey Johnson、Kelly A. Burke、Karis A. Tzeng、Patrick T. Mather、Stuart J. Rowan
DOI:10.1016/j.tet.2008.05.075
日期:2008.9
while facilitating scale up to multi-gram quantities in good yields (63–90%). The previous synthetic methodology was improved through judicious choice of the reducing agent and solvent in the reduction/ring-closing step. Via this platform, we also successfully accessed a mesogenic Bip ligand and herein report initial liquid crystalline properties of this derivative.