literature. The catalytic reaction has a vast substrate scope including a single-step synthesis of phthalazine from 1,2-benzenedimethanol and hydrazine hydrate via intramolecular coupling. Mechanistic investigation suggests that the coordinated ligand redox controls the reaction by the use of a reversible azo (N═N)/ hydrazo (NH—NH) redox couple where the metal center is used primarily as a template.
[EN] DIHYDRAZONE COMPOUNDS HAVING HIGH AFFINITY TO AΒ PROTEIN AND TAU PROTEIN, DERIVATIVES THEREOF AND USE THEREOF<br/>[FR] COMPOSÉS DE DIHYDRAZONE AYANT UNE AFFINITÉ ÉLEVÉE VIS-À-VIS DE LA PROTÉINE AΒ ET DE LA PROTÉINE TAU, LEURS DÉRIVÉS ET LEUR UTILISATION<br/>[ZH] 与Aβ蛋白和Tau蛋白具有高亲和力的双腙类化合物及其衍生物与应用
Willgerodt; Rieke, Chemische Berichte, 1905, vol. 38, p. 1480
作者:Willgerodt、Rieke
DOI:——
日期:——
Three polymorphs of 4-4′-diiodobenzalazine, and 4-chloro-4′-iodobenzalazine
作者:Charles R. Ojala、William H. Ojala、Doyle Britton、Christopher J. Cramer
DOI:10.1107/s0108270107034786
日期:2007.9.15
Three polymorphs of 4,4'-diiodobenzalazine (systematic name: 4-iodobenzaldehyde azine), C14H10I2N2, have crystallographically imposed inversion symmetry. 4-Chloro-4'-iodobenzalazine [systematic name: 1-(4-chlorobenzylidene)-2-(4-iodobenzylidene) diazane], C14H10ClIN2, has a partially disordered pseudocentrosymmetric packing and is not isostructural with any of the polymorphs of 4,4'-diiodobenzalazine. All structures pack utilizing halogen-halogen interactions; some also have weak pi ( benzene ring) interactions. A comparison with previously published methylphenylketalazines ( which differ by substitution of methyl for H at the azine C atoms) shows a fundamentally different geometry for these two classes, namely planar for the alazines and twisted for the ketalazines. Density functional theory calculations confirm that the difference is fundamental and not an artifact of packing forces.