605-93-6Relevant articles and documents
Fabrication, characterization and structure activity relationship of Co and Mn encapsulated on magnetic nanocomposite and its application in one-pot tandem synthesis of various tetrazoles and vitamin K3
Ashouri, Fatemeh,Farahanipour, Alireza,Faraji, Ali Reza,Hekmatian, Zahra
, (2022/02/21)
Considering the importance of vitamin K3 in commercial pet foods, veterinary medicines, poultry, and some swine feed and also tetrazole derivatives in pharmacy, medicine, chemistry, petroleum, and military industry, design efficient catalytic systems are desirable. Herein, four magnetic nanocomposites (MNCs) of cobalt and manganese using metformin, 3-aminopropyltrimethoxysilane (L1) and 2-aminoethyl-3-aminopropyltrimethoxysilane (L2) were designed and constructed as an efficient and controllable catalytic system. The synthesized nanocomposites fully characterized by FT-IR, AAS, ICP-OES, BET, CHN elemental analysis, SEM, TEM, DLS, EDX, TGA, VSM, and XPS spectroscopy. The well-prepared magnetically recoverable nanocomposites were used in the synthesis of a wide derivatives of α-hydrazino tetrazoles (α-HyT), ferrocenyltetrazoles (FcT), arylaminotetrazoles (ArAT) and also vitamin K3. Besides, the effect of operating parameters, such as the amount of catalyst, nature of solvent, temperature and reaction time, metal nature, chain length and hydrophobicity properties of linkers, was studied in the catalytic efficiency of synthesized nanocatalysts. The best catalytic results were obtained in the following order: FS-L2-Met@Co(II) > FS-L2-Met@Mn(II) > FS-L1-Met@Co(II) > FS-L1-Met@Mn(II) due to their structural characteristics. In addition to high TOF, these magnetic nanocomposites are superior in easy, inexpensive, and commercially preparation, keeping the structural and magnetic characteristics, easy magnetically separation from the reaction medium, short reaction time, mild reaction condition, easy work-up, and reusability without any metal leaching in six runs. Graphical abstract: [Figure not available: see fulltext.]
Bio-inspired dimerisation of prenylated quinones directed towards the synthesis of the meroterpenoid natural products, the scabellones
Chan, Susanna T.S.,Pullar, Michael A.,Khalil, Iman M.,Allouche, Emmanuelle,Barker, David,Copp, Brent R.
, p. 1486 - 1488 (2015/03/14)
Stirring 2-geranyl-6-methoxy-1,4-hydroquinone in pyridine/O2 or 2-geranyl-6-methoxy-1,4-benzoquinone in pyridine/N2 affords the dimeric meroterpenoid natural products, scabellones A-C in modest to low yields and also identifies 2-methoxy-6-(4-methylpent-3-en-1-yl)-1,4-naphthoquinone (scabellone E) as a new natural product. The corresponding reaction of the des-methoxy analogue, 2-geranyl-1,4-benzoquinone in degassed pyridine for three days afforded the natural product cordiachromene A (15% yield) and 6-(4-methylpent-3-en-1-yl)-1,4-naphthoquinone (12%), the latter being a likely biosynthetic precursor to the marine meroterpenoid alkaloids, conicaquinones A and B.
Efficient oxidation of polycyclic aromatic hydrocarbons with H 2O2 catalyzed by 5,10,15-triarylcorrolatoiron (IV) chloride in ionic liquids
Kumari, Pratibha,Nagpal, Ritika,Chauhan, Shive M.S.
supporting information, p. 15 - 20 (2013/01/15)
A simple and efficient oxidative system has been developed for the oxidation of polycyclic aromatic hydrocarbons with H2O2 catalyzed by 5,10,15-triarylcorrolatoiron (IV) chloride in mixed reaction media using imidazolium ionic liquids and organic solvents. The coordination effects of different organic solvents as well as anions of ionic liquids on the oxidation reactions have been examined.
