585-34-2Relevant articles and documents
Direct Oxygenation of Benzene and Its Analogues into Phenols Catalyzed by Oxovanadium(IV) Complex with Combined Use of Molecular Oxygen and Aldehyde
Hata, Eiichiro,Takai, Toshihiro,Yamada, Tohru,Mukaiyama, Teruaki
, p. 1849 - 1852 (1994)
In the presence of a catalytic amount of oxovanadium(IV) complexes coordinated by 1,3-diketone-type ligands, benzene and its analogues are directly oxygenated into phenols by combined use of molecular oxygen and crotonaldehyde at room temperature.
Preparation method of M-tert-butylphenol
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, (2021/03/31)
The invention discloses a preparation method of m-tert-butylphenol. The preparation method comprises the following steps: with tert-butylbenzene as a raw material, nitrifying tert-butylbenzene to obtain 2,4-dinitro-tert-butylbenzene, then conducting reduction and Baberger rearrangement to obtain 2,4-diamino-3-hydroxy tert-butylbenzene, and finally, performing diazotizing and reducing to remove amino groups so as to obtain m-tert-butylphenol. According to a process route in the invention, para-isomer generation is effectively avoided, and m-tert-butylphenol with a purity of 99% or above can beobtained through simple distillation; and the method has the advantages that raw materials are cheap and easy to obtain, the process is simple and has few side reactions, and the method is suitable for industrial production.
Easy Synthesis of a Self-Assembled Imine-Based Iron(II) Complex Endowed with Crown-Ether Receptors
Capocasa, Giorgio,Di Berto Mancini, Marika,Di Stefano, Stefano,Frateloreto, Federico,Lanzalunga, Osvaldo,Olivo, Giorgio
, (2020/06/10)
Herein we report that an imine-based iron complex decorated with crown-ether moieties self-assembles in CH3CN solution from three building blocks (namely Fe(CH3CN)2(OTf)2, 2-picolylamine and aldehyde 6a) added in the proper molar ratio (1:2:2, respectively). Aldehyde 6a, endowed with a benzocrown-ether receptor, can be prepared in two steps from commercial materials with high yields (79 percent) and no need of chromatographic separations. The self-assembled complex is highly stable in CH3CN solution. The complex has been tested as catalyst for the oxidation of aromatic compounds endowed with primary ammonium anchoring group with H2O2. An unexpected yet moderate selectivity for remote meta over ortho hydroxylation was obtained, which is mainly due to the steric hindrance of the catalyst.