58553-97-2Relevant academic research and scientific papers
Copper-Catalyzed Cyanoalkylation of Amines via C-C Bond Cleavage: An Approach for C(sp3)-N Bond Formations
Yang, Lin,Zhang, Jia-Yu,Duan, Xin-Hua,Gao, Pin,Jiao, Jiao,Guo, Li-Na
, p. 8615 - 8629 (2019/08/30)
The efficient copper-catalyzed cyanoalkylation of amines via C-C bond cleavage has been demonstrated. Distinctive features of this procedure involves mild conditions, broad range of nitrogen nucleophiles, high selectivity, and good functional group tolerance, thus providing a useful approach for the C(sp3)-N bond formations. Most importantly, this protocol is applicable to the late-stage functionalization of natural products, amino acid esters, and drugs. Mechanistic studies suggest that a radical intermediate was involved in this transformation.
Benzimidazole-based silver(I)-N-heterocyclic carbene complexes as anti-bacterials: Synthesis, crystal structures and nucleic acids interaction studies
Asekunowo, Patrick O.,Haque, Rosenani A.,Razali, Mohd. R.,Budagumpi, Srinivasa
, p. 126 - 137 (2015/03/30)
A series of new benzimidazolium salts as N-heterocyclic carbene (NHC) precursors has been synthesized. Reactions of these salts with Ag2O with varying metal-to-salt ratio facilitate the formation of a series of new binuclear and mononuclear Ag(I)-NHC complexes. All compounds were characterized using physicochemical and spectroscopic techniques. Single-crystal X-ray diffraction study reveals a binuclear structure for one of the complexes and a mononuclear one for two others. These complexes exist as cationic Ag(I)-NHC complexes with the chelation of carbene carbons to the silver centre in an almost linear manner. The compounds were screened for their anti-bacterial activities against Staphylococcus aureus (ATCC 12600) as a Gram-positive bacterium and Escherichia coli (ATCC 25922) as a Gram-negative bacterium. The results show that both bacteria appear markedly inhibited. Furthermore, the results suggest the possibility of steric variation as a modulation of the anti-bacterial activities. The nuclease activities of the compounds were assessed using gel electrophoresis and the results indicate that these complexes can cleave or degrade DNA and RNA via a non-oxidative mechanism.
Hofmann-type elimination in the efficient N-alkylation of azoles: Imidazole and benzimidazole
Horvath
, p. 102 - 106 (2007/10/02)
A simple and efficient preparation of 1-substituted 1H-azoles (imidazole and benzimidazole) has been developed, which involves a selective Hofmann-type elimination of the 2-cyanoethyl group from the azolium salts obtained by the reaction of halides with 1H-imidazole-1-propanenitrile and 1H-benzimidazole-1-propanenitrile. Overall yields of 1-substituted 1H-azoles decreased in the order: primary alkyl halides ≥ allylhalides ≥ secondary alkyl halides ≥ benzyl halides > α-keto halides, in relation to the alkylating agent, and imidazole ≥ benzimidazole, in relation to the azole, respectively.
