16109-46-9Relevant academic research and scientific papers
A azole amide preparation method of the compound
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Paragraph 0019-0021; 0025-0027; 0058-0060, (2018/04/27)
A preparation method of an azole-series amide compound. The invention discloses a method including a reaction that the azole-series amide is synthesized from a carboxylic acid compound and an azole compound with a copper salt as a catalyst and molecular o
Chemoselective acylation of benzimidazoles with phenylacetic acids under different Cu catalysts to give fused five-membered N-heterocycles or tertiary amides
Mai, Shaoyu,Zhao, Yingwei,Song, Qiuling
supporting information, p. 8685 - 8690 (2016/10/03)
C-N bond formation via a copper-catalyzed aerobic oxidative decarboxylative tandem protocol was realized. The phenylacetic acids which contain ortho-X (X = F or Br) on the aromatic ring will render a fused five-membered heterocycle via a tandem aromatic nucleophilic substitution and aerobic oxidative decarboxylative acylation at the C(sp2)-H bond of benzimidazoles under the Cu(OAc)2/K2CO3/BF3·Et2O catalytic system, while with CuBr as the catalyst and pyridine as the base, N-acylation occurred and tertiary amides were obtained.
Metal-free cross-dehydrogenative coupling of benzimidazoles with aldehydes to N-acylbenzimidazoles
Yu, Lin,Wang, Min,Wang, Lei
, p. 5391 - 5397 (2015/03/30)
A novel and direct cross-dehydrogenative coupling (CDC) between benzimidazoles with aldehydes promoted by di-tert-butyl peroxide (DTBP) was developed. The reactions generated the corresponding N-acylbenzimidazoles in good yields under metal-free conditions. This method has broad substrate scope and high efficiency.
Defined Dimensional Alterations in Enzyme Substrates. lin-Naphthoadenine and lin-Naphthoadenosine
Stevenson, Thomas M.,Leonard, Nelson J.
, p. 2158 - 2164 (2007/10/02)
lin-Naphthoadenine (lin = linear) and lin-naphthoadenosine have been synthesized for the first time, on the basis of the availability of the intermediate lin-naphthohypoxanthine from a shortened, efficient synthesis. 5,6-Dimethylbenzimidazole, protected by a bulky group on N, was subjected to selective benzylic bromination.The tetrabromo product, when treated with sodium iodide under Finkelstein conditions, generated a dibromo-o-xylylene intermediate that could be trapped by maleic anhydride or N-hydroxymaleimide, with aromatization by loss of 2 HBr.This Diels-Alder cycloaddition approach to the otherwise difficult available tetra-β-substituted naphthalenes was followed by stepwise conversions of the terminal anhydride or N-hydroxyimide ring to a suitable substituted pyrimidine ring. lin-Naphthoadenine and lin-naphthoadenosine are brillantly fluorescent, exhibiting high fluorescent yields (Φ = 0.57, 0.64) and long lifetimes (τ = 20.5, 22.4 ns in ethanol purged of oxygen).Neither is a substrate for adenosine deaminase, showing that a lateral extension of 4.8 Angstroem is too great for a satisfactory fit at the enzyme active site, whereas a 2.4-Angstroem extension (lin-benzoadenine and lin-benzoadenosine) is tolerated.
