Design and Study of Synthetic Chiral Nanoscopic Assemblies. Preparation and Characterization of Optically Active Hybrid, Iodonium−Transition-Metal and All-Transition-Metal Macrocyclic Molecular Squares
作者:Bogdan Olenyuk、Jeffery A. Whiteford、Peter J. Stang
DOI:10.1021/ja961444r
日期:1996.1.1
characterization of various optically active nanoscale-size tetranuclear assemblies held together by coordination bonds is described. Interaction of bis[4-(4‘-pyridyl)phenyl]iodonium triflate and bistriflates of chiral transition metal (Pd(II) or Pt(II)) bisphosphines resulted in the formation of chiral hybrid iodonium-transition metal molecular squares. Restricted rotation of the coordinated bis[4-(4‘-pyridyl)phenyl]iodonium
Hydrogen peroxide production <i>via</i> a redox reaction of <i>N</i>,<i>N</i>′-dimethyl-2,6-diaza-9,10-anthraquinonediium by addition of bisulfite
作者:Igor V. Kolesnichenko、P. Rogelio Escamilla、Jason A. Michael、Vincent M. Lynch、David A. Vanden Bout、Eric V. Anslyn
DOI:10.1039/c8cc05548c
日期:——
We demonstrate that bisulfite can be used for reduction of a highly electrophilic anthraquinone derivative, N,N′-dimethyl-2,6-diaza-9,10-anthraquinonediium (DAAQ), and subsequent autoxidation generates an equivalent of hydrogenperoxide. The mechanism for DAAQ reduction by bisulfite, DAAQ electrochemistry, and use of a simple test strip assay for H2O2, are described.
我们证明了亚硫酸氢盐可用于还原高度亲电的蒽醌衍生物,N,N'-二甲基-2,6-二氮杂-9,10-蒽醌二鎓(DAAQ),随后的自氧化反应产生的过氧化氢当量。描述了通过亚硫酸氢盐还原DAAQ的机理,DAAQ电化学以及H 2 O 2的简单测试条测定法的使用。
A Convenient Synthesis of Pyrido[3,4-<i>g</i>]isoquinoline via<i>ortho</i>-Directed Metallation/Dimerization
作者:Véronique Bolitt、Charles Mioskowski、S. Pulla Reddy、J. R. Falck
DOI:10.1055/s-1988-27584
日期:——
A practical synthesis of pyrido[3,4-g]isoquinoline was realized by a novel ortho-metallation/dimerization of N,N-diethylnicotinamide (or N,N-diethylisonicotinamide), hydriodic acid reduction of the resultant diazaanthraquinone, and catalytic dehydrogenation.
An organic photochromic compound with improved long term preservability, thermal stability, the repetition character of the record and the like and useful as recording-memory materials or photosensitizers, comprising the compound selected from pyrido[3,4-g]isoquinoline, pyrido[2,3-g]quinoline, pyrido[3,2-g]quinoline and pyrido[3,2-g]quinoline derivatives.