34602-67-0Relevant academic research and scientific papers
N-Picolinamides as ligands for Ullmann-type C-N coupling reactions
Damkaci, Fehmi,Alawaed, Abdulkhaliq,Vik, Erik
supporting information, p. 2197 - 2200 (2016/05/02)
The use of N-phenyl-2-pyridincarboxamide-1-oxide as a ligand with Cu2O in Ullmann type C-N bond formations between aryl halides and N-heteroaryls in common solvents, such as MeCN, DMF, and DMSO at 82-120 °C has been successfully demonstrated. The ligand is effective when only 4% equiv is used relative to the substrate. The reaction provided the corresponding products in coupling of electron-rich, electron poor, and ortho-substituted aryl halides, including ortho aryl-chlorides, in good to very good yields. N-arylation is selectively preferred at the benzyl position when ortho-halide benzyl bromide is reacted with one equivalent of pyrazole. However, di-N-arylation is achieved in very high yields when 2.5 equiv of pyrazole is used, providing a stoichiometric control over the coupling reaction.
Synthesis, antifungal activity and QSAR of some novel carboxylic acid amides
Du, Shijie,Lu, Huizhe,Yang, Dongyan,Li, Hong,Gu, Xilin,Wan, Chuan,Jia, Changqing,Wang, Mian,Li, Xiuyun,Qin, Zhaohai
, p. 4071 - 4087 (2015/05/13)
A series of novel aromatic carboxylic acid amides were synthesized and tested for their activities against six phytopathogenic fungi by an in vitro mycelia growth inhibition assay. Most of them displayed moderate to good activity. Among them N-(2-(1H-indazol-1-yl)phenyl)-2-(trifluoromethyl)benzamide (3c) exhibited the highest antifungal activity against Pythium aphanidermatum (EC50 = 16.75 μg/mL) and Rhizoctonia solani (EC50 = 19.19 μg/mL), compared to the reference compound boscalid with EC50 values of 10.68 and 14.47 μg/mL, respectively. Comparative molecular field analysis (CoMFA) and comparative molecular similarity indices analysis (CoMSIA) were employed to develop a three-dimensional quantitative structure-activity relationship model for the activity of the compounds. In the molecular docking, a fluorine atom and the carbonyl oxygen atom of 3c formed hydrogen bonds toward the hydroxyl hydrogens of TYR58 and TRP173.
Synthesis, antifungal activity and structure-activity relationships of novel 3-(difluoromethyl)-1-methyl-1H-pyrazole-4-carboxylic acid amides
Du, Shijie,Tian, Zaimin,Yang, Dongyan,Li, Xiuyun,Li, Hong,Jia, Changqing,Che, Chuanliang,Wang, Mian,Qin, Zhaohai
, p. 8395 - 8408 (2015/05/20)
A series of novel 3-(difluoromethyl)-1-methyl-1H-pyrazole-4-carboxylic acid amides were synthesized and their activities were tested against seven phytopathogenic fungi by an in vitro mycelia growth inhibition assay. Most of them displayed moderate to excellent activities. Among them N-(2-(5-bromo-1H-indazol-1-yl)phenyl)-3-(difluoro-methyl)-1-methyl-1H-pyrazole-4-carboxamide (9m) exhibited higher antifungal activity against the seven phytopathogenic fungi than boscalid. Topomer CoMFA was employed to develop a three-dimensional quantitative structure-activity relationship model for the compounds. In molecular docking, the carbonyl oxygen atom of 9m could form hydrogen bonds towards the hydroxyl of TYR58 and TRP173 on SDH.
Synthesis of azapyrrolo[3,2,1-jk]carbazoles, azaindolo[3,2,1-jk]carbazoles, and carbazole-1-carbonitriles by gas-phase cyclization of aryl radicals
Crawford, Lynne A.,McNab, Hamish,Mount, Andrew R.,Verhille, Jeanne,Wharton, Stuart I.
experimental part, p. 923 - 928 (2010/04/30)
Flash vacuum pyrolysis of N-(2-nitroheteroaryl)indoles or-carbazoles at 875C gave aza analogues of strained pyrrolo[3,2,1-jk]carbazole (50-55%) and indolo[3,2,1-jk]carbazole (55-85%) ring systems, respectively, through generation of aryl radicals and cycl
