35779-04-5Relevant articles and documents
AROMATIC IODINATION BY POSITIVE IODINE ACTIVE SPECIES GENERATED BY ANODIC OXIDATION IN TRIMETHYL ORTHOFORMATE
Shono, Tatsuya,Matsumura, Yoshihiro,Katoh, Susumu,Ikeda, Kaoru,Kamada, Tohru
, p. 1649 - 1650 (1989)
Anodic oxidation of iodine in trimethyl orthoformate afforded a solution of positive iodine active species which brought about more selective aromatic iodination than the hitherto known other methods.
Generation of Organozinc Reagents from Arylsulfonium Salts Using a Nickel Catalyst and Zinc Dust
Yamada, Kodai,Yanagi, Tomoyuki,Yorimitsu, Hideki
, p. 9712 - 9718 (2021/01/09)
Readily available aryldimethylsulfonium triflates react with zinc powder under nickel catalysis via the selective cleavage of the sp2-hybridized carbon-sulfur bond to produce salt-free arylzinc triflates under mild conditions. This zincation displays superb chemoselectivity and thus represents a protocol that is complementary or orthogonal to existing methods. The generated arylzinc reagents show both high reactivity and chemoselectivity in palladium-catalyzed and copper-mediated cross-coupling reactions.
Synthesis of pure blue emissive poly(2,7-carbazole)s anchored by electron donor pendant
Inada, Takashi,Shinnai, Toshinobu,Kijima, Masashi
, p. 2526 - 2534 (2019/11/03)
Three novel poly(2,7-carbazole)s having hole injection and transporting pendent moieties of carbazole and triphenylamine at the N-position were synthesized for achieving pure blue electroluminescence. The N-pendants in the polymers correspond to N-phenylcarbazol-2-yl (P1), N,N-diphenylamino-N-phenylcarabazol-2-yl (P2), and 4-phenyl having a hydrocarbon chain with a triphenylamine terminal (P3), respectively. Electronic, optical, and electroluminescence properties of these polymers were compared with those of a poly(2,7-carbazole) directly connected with triphenylamine at the N-position (P0) having an aggregation-induced emissive property. The photoluminescence (PL) spectra suggested that they could emit in the region of blue light in the film state. Especially, P2 that has the fixed and large diphenylaminocarbazolyl pendant showed a deep-blue fluorescence with CIE(x, y) = (0.15, 0.07). The P0, P2, and P3 based light emitting diode devices showed maximum electroluminescence wavelengths in the range of 430–450 nm. The P2 device showed pure blue emission (CIE[x, y] = [0.18, 0.16]), high luminance (1130 cd/m2) and current density (628 mA/cm2) at 8 V, whereas low-energy emissions around 500–600 nm were emerged at higher than 9 V. The P0 and P3 devices also showed a blue electroluminescence in the range of 8–11 V, but their luminance and efficiency were low.
