Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 14389-12-9, is researched, SMILESS is C1(C2=NN=NN2)=CC=NC=C1, Molecular C6H5N5Journal, Polyhedron called Zeolite and sulfated zirconia as catalysts for the synthesis of 5-substituted 1H-tetrazoles via [2+3] cycloaddition of nitriles and sodium azide, Author is Teimouri, Abbas; Chermahini, Alireza Najafi, the main research direction is nitrile sodium azide cycloaddition zeolite sulfated zirconia catalyst; tetrazole green preparation.Category: chiral-nitrogen-ligands.
The [2+3] cycloaddition between various nitriles and sodium azide proceeded smoothly in the presence of zeolite and sulfated zirconia as effective catalysts, in water and DMF/MeOH, to give the corresponding 5-substituted 1H-tetrazoles in good to high yields. The reaction most probably proceeded through the in situ formation of catalyst azide species, followed by a successive [2+3] cycloaddition with the nitriles. This method has the advantages of high yields, simple methodol. and easy work-up. The catalyst can be recovered by simple filtration and reused with good yields.
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Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis