Eco-friendly synthesis of 3,4-dihydroquinoxalin-2-amine, diazepine-tetrazole and benzodiazepine-2-carboxamide derivatives with the aid of MCM-48/H5PW10V2O40

Article abstract of DOI:10.1002/aoc.3729

A heterogeneous material composed of MCM-48/H₅PW₁₀V₂O₄₀ was produced and used as an efficient, eco-friendly and highly recyclable catalyst for the one-pot and multicomponent synthesis of 3,4-dihydroquinoxalin-2-amine, diazepine-tetrazole and benzodiazepine-2-carboxamide derivatives in aqueous media and at room temperature with high yields in short reaction times (40–60?min). The recoverable catalyst was easily recycled at least five times without any loss of catalytic activity. The structures of obtained products were confirmed using ¹H NMR and ¹³C NMR spectra.