23281-36-9Relevant academic research and scientific papers
Facile aldolization catalyzed by ionic liquid [4-sulfbmpyrazine][BF 4]
Zou, Jianzhong,Yi, Fengping,Zhang, Lirong,Wang, Zhen
, p. 6643 - 6646 (2013/07/26)
The acidic functionalized ionic liquid 1-(4-sulfonic group)butyl-3- methylpyrazine tetrafluoroborate (abbreviated as [4-sulfbmpyrazine][BF 4]) was employed as the catalyst of the condensation of aromatic aldehyde and diols. The optimized condition was as follows: aromatic aldehyde (0.20 mol), diols (0.30 mol) and [4-sulfbmpyrazine][BF4] (0.60 g) were refluxed in cyclohexane (10.00 mL) for 1 h. A series of aromatic aldehydes were studied and afforded the corresponding acetals products with good yields which were from 70.3 to 96.9 %. The ionic liquid catalyst could be recycled for four times without significant loss of catalyst reactivity.
Synthesis of N-arylpyridinium salts bearing a nitrone spin trap as potential mitochondria-targeted antioxidants
Robertson, Linsey,Hartley, Richard C.
experimental part, p. 5284 - 5292 (2009/11/30)
The generation of excess reactive oxygen species (ROS) in mitochondria is responsible for much of the oxidative stress associated with ageing (aging), and mitochondrial dysfunction is part of the pathology of neurodegeneration and type 2 diabetes. Lipophilic pyridinium ions are known to accumulate in mitochondria and this paper describes a general route for the preparation of nitrone-containing N-arylpyridinium salts having a range of lipophilicities, as potential therapeutic antioxidants. The compatibility of nitrones with the Zincke reaction is the key to their synthesis. Their trapping of carbon-centred radicals and the EPR spectra of the resulting nitroxides are reported.
Solid supported reactions and reagents XIV [1]: Envirocat EPZG as a novel catalyst for selective acetalization of aldehydes and ketones
Bandgar, Babasaheb P.,Gaikwad, Nandkumar B.
, p. 719 - 722 (2007/10/03)
Envirocat EPZG is an efficient reusable catalyst for acetalization of aldehydes and ketones. The isolation of pure products in high yields by simple filtration and evaporation of the solvent is an important feature of this method.
RADICAL-ANIONS GENERATED FROM CYCLIC ACETALS OF NITROBENZALDEHYDE, 2-NITRO-1,3-PROPANEDIOL, AND THEIR HETERO ANALOGS
Kukovitskii, D. M.,Zorin, V. V.,Zelechonok, Yu. B.,Zlot-skii, S. S.,Rakhmankulov, D. L.,Todres, Z. V.
, p. 132 - 136 (2007/10/02)
The potassium salts of the radical-anions of 2-nitrophenyl-1,3-diheterocycloalkanes and 5-alkyl-5-nitro-1,3-diheterocycloalkanes were generated in the liquid phase.The ESR spectra of the radical anions were analyzed, and it was concluded that the 1,3-dihe
