A series of aryl imines have been synthesized by Fly-ash: H2SO4 catalyzed microwave assisted process under solvent-free conditions. The yields of the imines have been found to be more than 87%. The purity of all imines has been checked using their physical constants and spectral data as published earlier in literature. The UV λmaxCN (nm), infrared νCN (cm− 1), NMR δ (ppm) of CH and CN spectral data have been correlated with Hammett ...
