TETRAHEDRON, cilt.66, sa.34, ss.6765-6768, 2010 (SCI-Expanded)
Useful triheteroarylmethanes were prepared by the double Friedel-Crafts reaction of a wide variety of aromatic N-tosyl imines with furan, thiophene, and pyrrole in the presence of Cu(OTf)(2) and Montmorillonite K-10 clay catalysts. (C) 2010 Elsevier Ltd. All rights reserved.