Gready, Jill E. published an article about the compound: 2-Aminoquinazolin-4(3H)-one( cas:20198-19-0,SMILESS:O=C1NC(N)=NC2=C1C=CC=C2 ).Recommanded Product: 20198-19-0. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:20198-19-0) through the article.
A purely structural definition of aromaticity based on the average ring bond length and π-bond order is proposed. The definition is illustrated for N-heterocycles by reference to theor. sto-3G and 3-21G geometries and charges for some pteridine derivatives The treatment focuses on the gross structural changes (i.e., ring size, overall degree of π-electron delocalization, and net ring charges), accompanying chem. changes, such as substitution, tautomerization, ring reduction, and deazination, as well as the structural interdependence of the two rings in a bicyclic ring system.
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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