137024-35-2Relevant academic research and scientific papers
Ruthenium nanoparticle-catalyzed, controlled and chemoselective hydrogenation of nitroarenes using ethanol as a hydrogen source
Kim, Ju Hyun,Park, Ji Hoon,Chung, Young Keun,Park, Kang Hyun
, p. 2412 - 2418 (2012)
This communication describes a ruthenium nanoparticle-catalyzed reduction of nitroarenes giving azoxyarenes, azoarenes, or anilines in good to excellent yields using ethanol as a hydrogen source. Copyright
Synthesis and photoresponse of helically folded poly(phenyleneethynylene)s bearing azobenzene moieties in the main chains
Sogawa, Hiromitsu,Shiotsuki, Masashi,Sanda, Fumio
, p. 4378 - 4387 (2013)
Novel optically active poly(phenyleneethynylene)s bearing azobenzene moieties in the main chains [poly(1-2m), poly(1-2p)] were synthesized by the Sonogashira-Hagihara coupling polymerization of 3′,5′-diiodo- 4′-hydroxy-N-α-tert-butoxycarbonyl-d-phenylglycine hexylamide (1) with 3,3′-diethynylazobenzene (2m) and 4,4′-diethynylazobenzene (2p). The corresponding polymers [poly(1-2m), poly(1-2p)], with number-average molecular weights of 10700 and 9400, were obtained in 70% and 86% yields, respectively. CD and UV-vis spectroscopic analyses revealed that poly(1-2m) and poly(1-2p) formed predominantly one-handed helically folded structures in CHCl3/THF mixtures. Poly(1-2m) underwent a reversible conformational change between folded and unfolded structures upon UV and visible irradiation, as a result of trans-cis isomerization of the azobenzene moieties. On the other hand, poly(1-2p) showed very little conformational transformation or azobenzene isomerization. The formation of helical structures was supported by conformational analysis based on the molecular mechanics (MM), semiempirical molecular orbital (MO), and density functional theory (DFT) methods.
Impact of the Alkyne Substitution Pattern and Metalation on the Photoisomerization of Azobenzene-Based Platinum(II) Diynes and Polyynes
Al-Balushi, Rayya A.,Haque, Ashanul,Jayapal, Maharaja,Al-Suti, Mohammed K.,Husband, John,Khan, Muhammad S.,Skelton, Jonathan M.,Molloy, Kieran C.,Raithby, Paul R.
, p. 10955 - 10967 (2016)
Trimethylsilyl-protected dialkynes incorporating azobenzene linker groups, Me3SiC ≡ CRC ≡ CSiMe3 (R = azobenzene-3,3′-diyl, azobenzene-4,4′-diyl, 2,5-dioctylazobenzene-4,4′-diyl), and the corresponding terminal dialkynes, HC ≡ CRC ≡
Supramolecular assemblies of azobenzene-β-cyclodextrin dimers and azobenzene modified polycaprolactones
Ma, Hengchang,Wang, Feng,Li, Wenfeng,Ma, Yuan,Yao, Xiaoqiang,Lu, Dedai,Yang, Yaoxia,Zhang, Zhe,Lei, Ziqiang
, p. 722 - 728 (2014)
Click chemistry is employed to couple two β-cyclodextrins at both ends of azobenzene moiety yielding dumbbell-shaped amphiphiles (AZO-β-CD dimer) constructed by rigid aromatic building blocks as "body", and hydrophilic cyclodextrins as "head" with almost
Organocatalytic oxidative dehydrogenation of aromatic amines for the preparation of azobenzenes under mild conditions
Ma, Hengchang,Li, Wenfeng,Wang, Jian,Xiao, Guanghai,Gong, Yuan,Qi, Chunxuan,Feng, Yunpeng,Li, Xiufang,Bao, Zhikang,Cao, Wei,Sun, Qiangsheng,Veaceslav, Caraus,Wang, Feng,Lei, Ziqiang
experimental part, p. 8358 - 8366 (2012/09/21)
(Diacetoxyiodo)benzene used as stoichiometrically and catalytically in the preparation of azobenzenes under mild reaction conditions was developed. The metal-free oxidation systems demonstrated wide substituents tolerance, alkyls, halogens, and several versatile functional groups, such as amino, ethynyl, and carboxyl substituents are compatible well, and the corresponding products could be formed with good to excellent yields. In this disclosed method, the more large scale formation of azo compounds also could be carried out successfully. Of note that 3-ethynylbenzenamine applied as a very useful cross dehydrogenative partner, which coupled with different anilines, providing asymmetrical azo compounds with acceptable yields in one step under very mild reaction conditions.
