53827-27-3Relevant academic research and scientific papers
Schiff Base Cobalt(II) Complex-Catalyzed Highly Markovnikov-Selective Hydrosilylation of Alkynes
Skrodzki, Maciej,Patroniak, Violetta,Pawlu?, Piotr
supporting information, p. 663 - 667 (2021/02/01)
A bench-stable cobalt(II) complex, with 3N-donor socket-type benzimidazole-imine-2H-imidazole ligand is reported as a precatalyst for regioselective hydrosilylation of terminal alkynes. Both aromatic and aliphatic alkynes could be effectively hydrosilylated with primary, secondary, and tertiary silane to give α-vinylsilanes in high yields with excellent Markovnikov selectivity and extensive functional-group tolerance. Catalyst loading varies within 0.5-0.05 mol %, which is one of the most efficient reported so far in the literature on cobalt-catalyzed alkyne hydrosilylation.
New artificial biomimetic enzyme analogues based on Iron(II/III) schiff base complexes: An effect of (Benz)imidazole organic moieties on phenoxazinone synthase and DNA recognition
Bocian, Aleksandra,Brykczyńska, Daria,Fik-Jaskó?ka, Marta A.,Gorczyński, Adam,Kubicki, Maciej,Patroniak, Violetta,Roviello, Giovanni N.,Szymańska, Martyna,Wa??sa-Chorab, Monika
, (2019/09/06)
Elucidation of the structure and function of biomolecules provides us knowledge that can be transferred into the generation of new materials and eventually applications in e.g., catalysis or bioassays. The main problems, however, concern the complexity of the natural systems and their limited availability, which necessitates utilization of simple biomimetic analogues that are, to a certain degree, similar in terms of structure and thus behaviour. We have, therefore, devised a small library of six tridentate N-heterocyclic coordinating agents (L1–L6), which, upon complexation, form two groups of artificial, monometallic non-heme iron species. Utilization of iron(III) chloride leads to the formation of the 1:1 (Fe:Ln) ‘open’ complexes, whereas iron(II) trifluoromethanosulfonate allows for the synthesis of 1:2 (M:Ln) ‘closed’ systems. The structural differences between the individual complexes are a result of the information encoded within the metallic centre and the chosen counterion, whereas the organic scaffold influences the observed properties. Indeed, the number and nature of the external hydrogen bond donors coming from the presence of (benz)imidazole moieties in the ligand framework are responsible for the observed biological behaviour in terms of mimicking phenoxazinone synthase activity and interaction with DNA.
SYNTHESIS AND REACTIONS OF 2-(1'-ALKYLHYDRAZINO)-BENZIMIDAZOLE WITH ACETYL(BENZOYL)ACETONE
Povstyanoi, M. V.,Kruglenko, V. P.,Fedosenko, E. N.,Klyuev, N. A.
, p. 891 - 893 (2007/10/02)
By reaction of 2-chlorobenzimidazole with methyl-, ethyl-, and 2-hydroxyethylhydrazine we have synthesized the corresponding 2-(1'-alkylhydrazino)benzimidazoles for the first time.By refluxing the latter in alcohols with acetyl(benzoyl)acetone they form 1-(2-benzimidazolyl)-1-alkyl hydrazones and, without solvent, form 1,3,5-trisubstituted 1,2,4-triazepinobenzimidazoles.
