2876-02-0Relevant articles and documents
Ortho-Selective Hydrogen Isotope Exchange of Phenols and Benzyl Alcohols by Mesoionic Carbene-Iridium Catalyst
Zhao, Liang-Liang,Wu, Yixin,Huang, Shiqing,Zhang, Zengyu,Liu, Wei,Yan, Xiaoyu
supporting information, p. 9297 - 9302 (2021/11/30)
Hydrogen isotope exchange reactions of phenols and benzyl alcohols have been achieved by a mesoionic carbene-iridium catalyst with high ortho selectivity and high functional group tolerance. Control experiments indicated that acetate is crucial to realize the ortho selectivity, whereas density functional theory calculations supported an outer-sphere direction with hydrogen bonding between acetate and the hydroxyl group.
Shifted Selectivity in Protonation Enables the Mild Deuteration of Arenes through Catalytic Amounts of Bronsted Acids in Deuterated Methanol
Fischer, Oliver,Hubert, Anja,Heinrich, Markus R.
, p. 11856 - 11866 (2020/10/23)
Taking advantage of the "differentiating effect"of the solvent methanol, deuterations of electron-rich aromatic systems can be carried out under mild acid catalysis and thus under far milder conditions than known so far. The exceptional functional group t
Catalytic Dimerization of Alkynes via C-H Bond Cleavage by a Platinum-Silylene Complex
Innocent, Jean,Kato, Tsuyoshi,Ohta, Masaya,Tobisu, Mamoru,Yoshida, Tomoki
supporting information, p. 1678 - 1682 (2020/06/08)
The cyclodimerization of diphenylacetylene derivatives catalyzed by a platinum-silylene complex is reported. The reaction proceeds via the cleavage of a carbon-hydrogen bond at the position ortho to an alkynyl group, and no additives are needed. Platinum complexes bearing other common ligands, such as phosphines and NHCs, failed to promote this reaction, highlighting the utility of the silylene ligand in this reaction.
Ipso nitration. XXII. The stereochemistry of 1,4-dimethyl-4-nitrocyclohexa-2,5-dienols and their acetates and methyl ethers
Fischer, Alfred,Henderson, George N.,Smyth, Trevor A.,Einstein, Frederick W. B.,Cobbledick, Roger E.
, p. 584 - 590 (2007/10/02)
The higher melting isomer of 1,4-dimethyl-4-nitrocyclohexa-2,5-dienol has the (E)-configuration.The stereospecific interconversion of the dienols and the corresponding acetates and the stereospecific conversion of dienols to methyl ethers allow the assign
ON THE MECHANISM OF AROMATIC HYDROXYLATION BY O(3P) ATOMS
Zadok, Elazor,Mazur, Yehuda
, p. 4955 - 4958 (2007/10/02)
It is shown that O(3P) oxidation of aromatic compounds in the liquid phase leading to phenols may involve the intermediacy of triplet diradicals