Sulfonic acid functionalized SBA-15 (SBA-Pr-SO3H) as a new nanoporous acid catalyst was used in the one-pot synthesis of polyhydroquinolines derivatives via the Hantzsch four component condensation reaction of aldehydes, b-ketoesters, dimedone and ammonium acetate under solvent free conditions with short reaction time in excellent yields. SBA-P...

Developing fluorescent paper-based materials with recyclable, environmental friendly, excellent stable and uniform performances are still an urgent challenge at present. Herein, a simple, green, high-efficiency method for the fabrication of high stability recyclable cellulose-based paper from waste bagasse via Hantzsch reaction is proposed. Compared to pristine paper, surface modification showe...

ABSTRACT FeNH4(SO4)2·12H2O (alum) efficiently catalyzes the one-pot three-component reaction of dimedone, aldehydes, and 3-aminocrotonate to afford 1,4-dihydropyridines. The work-up is easy, and the products are obtained in good to excellent yields and high purity. GRAPHICAL ABSTRACT