145551-25-3Relevant articles and documents
Unified synthesis of mono/bis-arylated phenols via RhIII-catalyzed dehydrogenative coupling
Wu, Qian,Chen, Ying,Yan, Dingyuan,Zhang, Muyue,Lu, Yi,Sun, Wei-Yin,Zhao, Jing
, p. 169 - 173 (2016)
2,6-Bis-arylated phenols are rarely reported and are synthetically challenging. Directed C-H functionalization reactions, using a directing group (DG), might provide a convenient solution to their synthesis. However, this strategy usually results in partial cleavage of the directing group, preventing further/second C-H activation cascades. Herein we report a general strategy that allows for the precise control of the oxidation pathways so that directing groups can be either preserved or cleaved. We found that N-phenoxyacetamides could undergo ortho-arylation reactions with or without an external oxidant, yielding products with different oxidation states, notably the rare bis-arylated phenols. Notably, a unique rhodacycle intermediate was isolated, characterized by X-ray crystallography, and confirmed to be an active catalyst. Switching between internal and external oxidation could be a general strategy in diverse directed C-H functionalization reactions to realize bis-functionalized products.
Electronic structure manipulation of (benzothiazole)zinc complexes: Synthesis, optical and electrochemical studies of 5-substituted derivatives
Dey, Somnath,Efimov, Alexander,Giri, Chandan,Rissanen, Kari,Lemmetyinen, Helge
, p. 6226 - 6232 (2011/12/01)
The electronic properties of bis[2-(2-hydroxyphenyl)benzothiazolato] zinc(II) complexes were tuned by attachment of electron-withdrawing and-donating aryl groups through the Suzuki-Miyaura coupling reaction. Optimization studies of the borylation reaction and Suzuki coupling of protected benzothiazoles were performed to maximize the yields of the target compounds. The absorption, emission, and electrochemical properties of the newly synthesized complexes were found to correlate to the electronic nature of the attached aryl group. Whereas the LUMO levels are less dependent on the substituents, the HOMO levels are very sensitive to the nature of the substituent, thus providing an array of organometallic complexes with gradual changes in redox potentials.
ORGANOMETALIC COMPOUNDS FOR ELECTROLUMINESCENCE AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME
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Page/Page column 11, (2010/06/22)
The present invention relates to organic electroluminescent compounds and electroluminescent devices comprising the same as host material. The electroluminescent compounds according to the invention are characterized by having three ligands, two bivalent metals and a monovalent anion derived from an inorganic or an organic acid.