4373-74-4Relevant academic research and scientific papers
Aerobic oxidation of PdII to PdIV by active radical reactants: Direct C-H nitration and acylation of arenes via oxygenation process with molecular oxygen
Liang, Yu-Feng,Li, Xinyao,Wang, Xiaoyang,Yan, Yuepeng,Feng, Peng,Jiao, Ning
, p. 1956 - 1963 (2015/03/14)
A Pd-catalyzed aerobic oxidative C-H nitration and acylation of arenes with simple and readily available tert-butyl nitrite (TBN) and toluene as the radical precursors has been developed. Molecular oxygen is employed as the terminal oxidant and oxygen source to initiate the active radical reactants. Many different directing groups such as pyridine, pyrimidine, pyrazole, pyridol, pyridylketone, oxime, and azo groups can be employed in these novel transformations. The PdII/PdIV catalytic cycle through a radical process is the most likely pathway for these oxidative C-H nitration and acylation reactions.
Rhodium(III)-catalyzed azidation and nitration of arenes by C-H activation
Xie, Fang,Qi, Zisong,Li, Xingwei
supporting information, p. 11862 - 11866 (2013/11/19)
Getting a handle on it: In the chelation-assisted title reactions in the presence of a hypervalent iodine oxidant, sodium azide and sodium nitrite served as readily available nitrogen sources, and pyridine, pyrimidine, and pyrazole substituents were effic
Copper-mediated chelation-assisted ortho nitration of (hetero)arenes
Zhang, Lin,Liu, Zhenhua,Li, Huiqin,Fang, Guichun,Barry, Badru-Deen,Belay, Tuemay Abadi,Bi, Xihe,Liu, Qun
supporting information; experimental part, p. 6536 - 6539 (2012/02/04)
A novel copper-mediated chelation-assisted ortho C-H nitration of (hetero)arenes has been developed for the first time, which used dioxygen as terminal oxidant and 1, 2, 3-TCP as solvent, leading to the synthesis of nitroaromatics with excellent regiosele
Synthesis of the New Pyridobenzo-v-triazinium System via Valence Bond Isomerization
Messmer, A.,Hajos, Gy.,Giber, J.,Holly, S.
, p. 1133 - 1135 (2007/10/02)
α-Pyridylphenyl diazonium salts 2 were found to undergo valence bond isomerization and gave the new pyridobenzo-v-triazinium salts 3.The ir and nmr studies on the products showed that isomers 2 and 3 form an equilibrium, and the ring closure is favoured by electron withdrawing substituents.
