Dimerization of 2-hydroxyanthracene was investigated with 5 mol % of various catalysts that are efficient catalysts for the dimerization of 2-naphthol. Catalysts such as Cu(OH)Cl·TMEDA, [Mn(acac)3], and [Mn(acac)2] did not give satisfactory results. However, MnI2, which gave only trace amounts of dimerization product of 2-naphthol under the same conditions, afforded 2,2′-dihydroxy-1,1′-bianthracene in 74% yield.
Copper(II)-Mediated Oxidative Coupling of 2-Aminonaphthalene Homologues. Competition between the Straight Dimerization and the Formation of Carbazoles
作者:Štěpán Vyskočil、Martin Smrčina、Miroslav Lorenc、Iva Tišlerová、Robin D. Brooks、Janusz J. Kulagowski、Vratislav Langer、Louis J. Farrugia、Pavel Kočovský
DOI:10.1021/jo005691w
日期:2001.2.1
Whereas the Cu(II)-mediated oxidative coupling of 2-aminonaphthalenes 7a and 7b results in the clean formation of 1,1'-binaphthyls 13a and 13b, respectively, their higher homologues and congeners 8-12 have been found to exhibit a different reaction pattern. Thus, 2-aminoanthracene (8) gave a approximately 1:1 mixture of the expected bianthryl derivative 15 and the carbazole 16, whereas the 9-aminophenanthrene
activity of N−C(α)−C(β1) region of the free radical hybrid determine the regioselectivity of polycyclic aromatic amines (PAAs) electrochemical oxidation towards carbazole and phenazine based aza-helicenes. This work would pave the way for precise construction of heteroatom fused helical large π-conjugated system using direct splicing strategy from PAHs derivatives.
NOVEL ORGANIC SEMICONDUCTOR COMPOUND, METHOD FOR PREPARING SAME, AND ORGANIC SEMICONDUCTOR COMPOSITION, AND ORGANIC SEMICONDUCTOR THIN FILM AND ELEMENT CONTAINING THE SAME
申请人:Han Sung Hwan
公开号:US20110253944A1
公开(公告)日:2011-10-20
The present invention relates to a novel polycyclic aromatic organic semiconductor compound having a polycyclic aromatic core, a method for preparing the same, and electronic, optical or electro-optical devices such as an organic semiconductor composition, organic semiconductor thin film, organic field effect transistor and solar cell containing the compound. The novel organic semiconductor compound according to the present invention has high crystallinity and control capability, and facilitates control of doping conditions in the manufacture of organic semiconductor element so that it can be used for diverse applications. The compound can be mass-produced at low cost and has high solubility in organic solvents so that a liquid phase process can be applied to the manufacture of semiconductor elements and the like, thus enabling the mass-production of semiconductor elements and solar cells at low cost.