%0 Journal Article %J Tetrahedron %D 2021 %T Metal-free, Tf2NH-catalyzed 1, 6-conjugate addition of imidazopyridine to para-quinone methides: easy access to C3-functionalized triarylmethane imidazopyridine %A Khonde, Nilesh S. %A Said, Madhukar S. %A Sabane, Jagjivan K. %A Gajbhiye, Jayant M. %A Kumar, Pradeep %K 1 %K 6-Conjugate addition %K Bronsted acid %K C3-functionalization %K Imidazopyridine %K para-Quinone methide %X An inexpensive and commercially available Tf2NH-catalyzed 1,6-conjugate addition of imidazopyridine (IMPY) heterocycles to para-quinone methides (p-QMs) is reported. The present transformation provides a diverse class of C3-functionalized triarylmethanes heterocyclic derivatives of imidazopyridine. These metal-free transformations provided a very broad substrate scope of conjugate addition product with a high yield up to 97% within a short duration. (C) 2021 Elsevier Ltd. All rights reserved. %B Tetrahedron %V 101 %P 132510 %8 NOV %G eng %9 Article %3 Foreign %4 2.457 %R 10.1016/j.tet.2021.132510