Efficiency of NaHSO4 modified periodic mesoporous organosilica magnetic nanoparticles as a new magnetically separable nanocatalyst in the synthesis of [1,2,4]triazolo quinazolinone/pyrimidine derivatives

γ-Fe2O3@Ph-PMO-NaHSO4 as a new magnetically separable solid acid nanocatalyst is prepared and applied for the synthesis of [1,2,4]triazolo quinazolinone/pyrimidine derivatives.176