312693-03-1Relevant articles and documents
Direct transformation of aryl 2-pyridyl esters to secondary benzylic alcohols by nickel relay catalysis
Wu, Xianqing,Li, Xiaobin,Huang, Wenyi,Wang, Yun,Xu, Hui,Cai, Liangzhen,Qu, Jingping,Chen, Yifeng
supporting information, p. 2453 - 2458 (2019/03/29)
A direct transformation of aryl esters to secondary benzylic alcohols via tandem Ni-catalyzed cross-coupling reactions of aromatic 2-pyridyl esters with alkyl zinc reagents and carbonyl group reduction by Ni-H species is achieved. Preliminary mechanistic studies reveal that the Ni-H species is generated in situ via β-hydride elimination of the Negishi reagents. The reaction is catalyzed by bench-stable nickel salts under mild conditions with wide functional group tolerance.
Wide-Range Near-Infrared Sensitizing 1 H -Benzo [c, d] indol-2-ylidene-Based Squaraine Dyes for Dye-Sensitized Solar Cells
Haishima, Yuki,Kubota, Yasuhiro,Manseki, Kazuhiro,Jin, Jiye,Sawada, Yoshiharu,Inuzuka, Toshiyasu,Funabiki, Kazumasa,Matsui, Masaki
, p. 4389 - 4401 (2018/04/26)
NIR absorbing squaraine dyes SQ1-SQ7 having 1H-benzo[c,d]indol-2-ylidene as a donor moiety were designed for application in DSSCs. Annulation of the benzene ring to an 3H-indolium-based anchor moiety led to a red-shifted and broadened absorption band on TiO2 film, which were reflected in the improved short-circuit current density of SQ2 (6.22 mA cm-2) compared to the nonbenzene fused derivative SQ1 (4.39 mA cm-2). Although the introduction of a butoxy (SQ4: 806 nm) or dialkylamino group (SQ5-SQ7: 815-820 nm) to the 1H-benzo[c,d]indol-2-ylidene-based donor moiety resulted in red-shifted absorption maxima in ethanol compared to the nonsubstituted derivative SQ2 (784 nm), the HOMO energy level of SQ4-SQ7 gave rise to an undesirable approximation to the redox potential of I-/I3-. Thus, the butoxy (SQ4: 0.56) and dialkylamino (SQ5-SQ7: 0.25-0.30) derivatives had relatively lower conversion efficiencies. Since the 2-ethylhexyl derivative SQ3 exhibited red-shifted absorption (λmax: 796 nm), suitable HOMO and LUMO energy levels, and relatively efficient restriction of charge recombination, this dye achieved the highest conversion efficiency (1.31%), along with a high IPCE response of over 20% over a wide range from 640 to 860 nm and an onset of IPCE at 1000 nm.
Preparation of Organozinc and Organocadmium Compounds from the Metals and Alkyl Halides in the Presence of Stimulating Systems Based on a Derivative a Transition Metal and an Organometallic Compound
Eremeev,Danov,Skudin,Sakhipov
, p. 556 - 559 (2007/10/03)
Full and mixed alkyl derivatives of zinc and cadmium were prepared from these metals and organic halides in the presence of stimulating systems necessarily containing a transition metal derivative and an organometallic compound capable of reducing this derivative under the process conditions. Such stimulating systems make it possible to introduce selectively organic halides (iodides, bromides, chlorides) into the reaction with zinc and cadmium to obtain the corresponding mixed organometallic compounds.
