Variation of the Backbone Conjugation in NLO Model Compounds: Torsion-Angle-Restricted, Biphenyl-Based Push-Pull-Systems
作者:Jürgen Rotzler、David Vonlanthen、Alberto Barsella、Alex Boeglin、Alain Fort、Marcel Mayor
DOI:10.1002/ejoc.200901358
日期:2010.2
responses. A general synthetic route that can be implemented to access these model compounds is reported, starting from dibromo or ditriflate biphenyls. Hartwig-Buchwald cross-coupling, a selective azacycloalkylation of diaminobiphenyls and a mild oxidation of primary amines to nitro groups in the presence of a tertiary amine summarizes the synthetic pathway towards the desired model compounds. NLO properties
CuBr/H<sub>2</sub>O<sub>2</sub>-Mediated Oxidative Coupling of<i>N</i>,<i>N</i>-Dialkylarylamines in Water: A Practical Synthesis of Benzidine Derivatives
作者:Chanjuan Xi、Yanfeng Jiang、Xianghua Yang
DOI:10.1055/s-2005-868490
日期:——
CuBr/H2O2 was deployed into mediating the oxidative coupling reaction of N,N-dialkylarylamines in water, which gave benzidine derivatives in an economically and environmentally satisfying manner.
Oxidative Coupling of<i>N</i>,<i>N</i>-Dialkylanilines Using Iodic Acid and Sodium Nitrite
作者:Sameerana N. Huddar、Ulhas S. Mahajan、Krishnacharya G. Akamanchi
DOI:10.1246/cl.2010.808
日期:2010.8.5
A new reagent system, a combination of iodic acid and sodium nitrite has been investigated for oxidative coupling of N,N-disubstituted anilines. A facile para-selective coupling occurs to give benz...
Solid-state nickel(0)-mediated Yamamoto coupling enabled by mechanochemistry
作者:Koji Kubota、Naoki Shizukuishi、Shotaro Kubo、Hajime Ito
DOI:10.1093/chemle/upae056
日期:2024.3.29
Herein, we report the first solid-state protocol for nickel(0)-mediated Yamamoto-coupling reactions using ball milling. A variety of aryl halides reacted efficiently in the presence of bis(cyclooctadiene)nickel(0) [Ni(cod)2] and 4,4'-di-tert-butyl-2,2'-bipyridyl under solid-state mechanochemical conditions, affording the corresponding biaryls in high yields. Considering that potentially harmful and
Aryltitanium Species through the Reaction of <i>N,N</i>-Dialkylarylamines with TiCl<sub>4</sub>: Oxidative Coupling, <i>N</i>-Dealkylation, and Reaction with Electrophiles