Abstract An effective microwave-induced, solid acid-catalyzed, environmentally benign synthesis of substituted pyrroles, indoles and carbazoles under solvent-free conditions is described. The new synthetic methodology is based on the use of a considerably strong solid acid, K-10 montmorillonite. Both the cyclialkylation of amines and annelation of pyrroles and indoles have been completed within minutes and provided excellent (75–98 ...
[Pridmore, Simon J.; Slatford, Paul A.; Taylor, James E.; Whittlesey, Michael K.; Williams, Jonathan M.J. Tetrahedron, 2009 , vol. 65, # 44 p. 8981 - 8986]