Porous organic polymer bearing triazine and pyrene moieties as an efficient organocatalyst.

We report a new secondary amine linked triazine and pyrene containing microporous organic polymer (TrzPyPOP) through the polycondensation reaction and it is used as a very efficient organocatalyst for the synthesis of dihydropyrimidones via multicomponent coupling reaction. [Display omitted] • A new secondary amine linked triazine and pyrene containing microporous organic polymer (TrzPyPOP) is reported. • Polycondensation reaction between tetramine and monoaldehyde resulted N-rich POP with high BET surface area. • High surface area and N-rich basic sites are explored in heterogeneous organocatalyst. • High yield synthesis of dihydropyrimidones are reported via three-component coupling reaction. • Dihydropyrimidones yields are 88–99 % together with high recycling efficiency under the optimum conditions. Materials with high specific surface area and bearing abundant basic sites at their pore surface are very demanding as heterogeneous catalyst for the eco-friendly base catalyzed reactions. Here we have developed a new secondary amine linked triazine and pyrene containing microporous organic polymer (TrzPyPOP) through a simple polycondensation reaction between tetramine1,4-bis(4,6-diamino-s-triazin-2-yl)-benzene (SL-1) and monoaldehyde pyrene-1-carboxaldehyde. This new porous organic polymer TrzPyPOP is very rich in N-content with high BET surface area (1016 m2 g−1). High surface area and N-rich surface basic sites have been explored in its potential as heterogeneous organocatalyst for the synthesis of dihydropyrimidones via Biginelli condensation involving three-component coupling reaction. Only a very little amount of catalyst was effective for the synthesis of dihydropyrimidones derivatives (yields = 88–99 %) together with high recycling efficiency under the optimum reaction conditions. [ABSTRACT FROM AUTHOR]