56894-67-8Relevant academic research and scientific papers
Copper-mediated C-H/C-H biaryl coupling of benzoic acid derivatives and 1,3-azoles
Nishino, Mayuko,Hirano, Koji,Satoh, Tetsuya,Miura, Masahiro
, p. 4457 - 4461 (2013)
Hot couple: A precious-metal-free copper-mediated intermolecular direct biaryl coupling of benzoic acid derivatives and 1,3-azoles has been developed. The key to success is the installation of an amide-based bidentate coordinating group, which is easily removed and transformed into the parent ester groups after the coupling reaction. Kinetic studies indicate that the rate-limiting step is the aromatic C-H bond cleavage of benzoic acid derivatives. Copyright
Aromatic Carbonylation Regio-Controlled by Oxazole and Isoxazole Rings, Novel Route to Heterocycle-Substituted o-Benzoates
Sakakibara, Tsutomu,Kume, Takashi,Ohyabu, Takahiro,Hase, Tsunao
, p. 1694 - 1697 (2007/10/02)
3,5-Diphenylisoxazole and 2,5-diphenyloxazole were regioselectively carbonylated under an atmosphere of carbon monoxide after the formation of arylpalladium(II) intermediates, to give bioactive o-benzoates substituted by isoxazole and oxazole rings in goo
Oxadiazole benzoic acid derivatives as herbicides
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, (2008/06/13)
New 2-(1,3,4-oxadiazole-2-yl) benzoic acids and salts and esters thereof, as well as certain 2-(2-oxazolyl) benzoic acids, salts and esters, having the formula: SPC1 Where X is nitrogen or C-R" (R" being hydrogen or methyl), R is phenyl or various substituents, and R' and the Y's are hydrogen or various substituents, are effective preemergence or postemergence herbicides, on various crops. The chemicals act selectively and are useful against purple nutsedge and in cranberry. Oxadiazoles of the invention may be made by reacting a benzhydrazide with phthalic anhydride to form a hydrazide which is cyclized by removal of the elements of water, using as a catalyst fuming sulfuric acid or dimethylformamide-sulfur trioxide complex.
