485824-13-3Relevant academic research and scientific papers
ORGANIC COMPOUND AND ORGANIC OPTOELECTRIC DEVICE AND DISPLAY DEVICE
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Paragraph 0317-0319; 0329-0331; 0344-0346, (2017/10/20)
The present invention relates to an organic compound, an organic photoelectric device having the organic compound applied thereto, and a display device including the organic photoelectric device. The organic compound is formed by a combination of a moiety
Palladium/tetraphosphine catalyzed suzuki cross-coupling of heteroarylboronic acids with aryl halides
Kondolff, Isabelle,Doucet, Henri,Santelli, Maurice
, p. 109 - 118 (2008/09/18)
(Chemical Equation Presented) cis,cis,cis-1,2,3,4- Tetrakis(diphenylphosphinomethyl)cyclopentane/[PdCl(C3H 5)]2 efficiently catalyses the Suzuki reaction of heteroarylboronic acids with aryl bromides and also the coupling of arylboronic acids with heteroaryl bromides. The coupling of thiophene- or benzothiopheneboronic acids, furan- or benzofuranboronic acids and 3-pyridineboronic acid with a variety of aryl bromides gave the corresponding coupling products in good yields. However, in most cases, better results in terms of ratio substrate/catalyst were obtained for the reverse reaction using heteroaryl bromides with arylboronic acids.
Synthesis of dihydrodiol metabolites implicated in the mechanism of carcinogenesis of phenanthro[4,3-b][1]benzothiophene and phenanthro[3,4-b][1]benzothiophene, the polycyclic sulfur heterocycles with a "Fjord" structure.
Kumar, Subodh
, p. 8842 - 8846 (2007/10/03)
Dihydrodiols, which are potential proximate carcinogens of phenanthro[4,3-b][1]benzothiophene (3) and phenanthro[3,4-b][1]benzothiophene (4) and possess a "fjord" structure, were synthesized. The dihydrodiols synthesized were trans-3,4-dihydroxy-3,4-dihydrophenanthro[4,3-b][1]benzothiophene (5) and trans-3,4-dihydroxy-3,4-dihydrophenanthro[3,4-b][1]benzothiophene (6). The precursors to the dihydrodiols 5 and 6 were 3-methoxyphenanthro[4,3-b][1]benzothiophene (11) and 3-methoxyphenanthro[3,4-b][1]benzothiophene (16). Compound 11 was obtained via Suzuki cross-coupling reaction of easily accessible starting materials. However, this synthetic strategy utilizing Suzuki reaction for the preparation of 16 was comparatively less productive than that described previously due to time-consuming synthesis of the starting material(s), and extremely poor yield associated with cyclization of the epoxide 15 to 16. The methoxy derivatives 11 and 16 were converted to the corresponding dihydrodiols 5 and 6 by a sequence involving demethylation, oxidation, and reduction. The trans-stereochemistry of the dihydrodiols was established by (1)H NMR, which indicated a large coupling constant between vicinal carbinol protons. The UV spectra of the dihydrodiols 5 and 6 are presented.
