Research Article

H-ZSM-5 Zeolite Synthesis by Sourcing Silica from the Wheat Husk Ash: Characterization and Application as a Versatile Heterogeneous Catalyst in Organic Transformations including Some Multicomponent Reactions

Scheme 1

Classical synthesis of 2,3-diphenyl quinoxaline by cyclocondensation of benzil and benzene-1,2-diamine.