459-57-4Relevant academic research and scientific papers
A porphyrin-conjugated TiO2/CoFe2O4nanostructure photocatalyst for the selective production of aldehydes under visible light
Ghobadifard, Mahdieh,Safaei, Elham,Radovanovic, Pavle V.,Mohebbi, Sajjad
, p. 8032 - 8044 (2021)
We investigated the photocatalytic performance of a magnetic nanohybrid of CoFe2O4 and TiO2 hetero-nanostructures (TiO2/CoFe2O4) conjugated with zinc tetrakis carboxyphenyl porphyrin (ZnTCPP) for controlled oxidation of alcohols to aldehydes under visible
AN IMPROVED AND PRACTICAL SYNTHESIS OF 4-FLUOROBENZALDEHYDE BY HALOGEN-EXCHANGE FLUORINATION REACTION
Yoshida, Yasuo,Kimura, Yoshikazu
, p. 291 - 298 (1989)
A process which can afford a large quantity of 4-fluorobenzaldehyde was developed from halogen-exchange of 4-chlorobenzaldehyde with potassium fluoride in aromatic hydrocarbon solvents in the presence of tetraphenylphosphonium bromide plus polyethylene glycol dimethyl ether.The features of the reaction are discussed.
Synthesis, characterization, crystal structure, and catalytic activity of an end-on azido-bridged polymeric copper(Ii) complex derived from 4-methyl-2- [(3-methylaminopropylimino)methyl]phenol
Liu, Li-Jun
, p. 956 - 960 (2017)
An end-on azido-bridged polymeric copper(II) complex, [CuL(μ1,1-N3)]n (HL D 4-methyl-2- [(3-methylaminopropylimino)methyl]phenol), was synthesized and characterized by elemental analysis, IR spectra, and single-crystal X-r
Synthesis of an amino-functionalized metal-organic framework at a nanoscale level for gold nanoparticle deposition and catalysis
Luan, Yi,Qi, Yue,Gao, Hongyi,Zheng, Nannan,Wang, Ge
, p. 20588 - 20596 (2014)
In this study, highly dispersed Au nanoparticles have been immobilized on amino-functionalized metal-organic frameworks (MOFs) via a novel absorption/reduction method in solution. The amino functionality of the MOF rapidly coordinated with HAuCl4/su
Cobalt(II) supported on ethylenediamine-functionalized nanocellulose as an efficient catalyst for room temperature aerobic oxidation of alcohols
Shaabani, Ahmad,Keshipour, Sajjad,Hamidzad, Mona,Seyyedhamzeh, Mozhdeh
, p. 111 - 115 (2014)
Ethylenediamine-functionalized nanocellulose complexed with cobalt(II) was found to be a highly efficient heterogeneous catalyst for the room temperature aerobic oxidation of various types of primary and secondary benzylic alcohols into their correspondin
Controlled reduction of activated primary and secondary amides into aldehydes with diisobutylaluminum hydride
Azeez, Sadaf,Kandasamy, Jeyakumar,Sabiah, Shahulhameed,Sureshbabu, Popuri
supporting information, p. 2048 - 2053 (2022/03/31)
A practical method is disclosed for the reduction of activated primary and secondary amides into aldehydes using diisobutylaluminum hydride (DIBAL-H) in toluene. A wide range of aryl and alkyl N-Boc, N,N-diBoc and N-tosyl amides were converted into the corresponding aldehydes in good to excellent yields. Reduction susceptible functional groups such as nitro, cyano, alkene and alkyne groups were found to be stable. Broad substrate scope, functional group compatibility and quick conversions are the salient features of this methodology.
Highly atom efficient synthesis of 2,2,4,5-tetrasubstituted 3(2H)-furanones having both hydroxyl and amino substituents
Antony, Jesna,Mathai, Sindhu,Natarajan, Rakesh,P. Musthafa, Sumi,Rappai, John P.,S. Devaky, Karakkattu
supporting information, (2022/02/25)
We have developed a highly atom efficient synthesis of tetrasubstituted 3(2H)-furanones from easily accessible starting materials such as C,N-diarylaldonitrones and dibenzoylacetylene. Control experiments revealed that reaction of aldonitrones having electron-withdrawing groups on the C-aryl substituent in polar aprotic solvents exhibited high product selectivity while reaction temperature has only a negligible effect on product yield and selectivity.
Functionalized-1,3,4-oxadiazole ligands for the ruthenium-catalyzed Lemieux-Johnson type oxidation of olefins and alkynes in water
Hkiri, Shaima,Touil, Soufiane,Samarat, Ali,Sémeril, David
, (2021/11/30)
Three arene-ruthenium(II) complexes bearing alkyloxy(5-phenyl-1,3,4-oxadiazol-2-ylamino)(4-trifluoromethylphenyl)methyl ligands were quantitatively obtained through the reaction of (E)-1-(4-trifluoromethylphenyl)-N-(5-phenyl-1,3,4-oxadiazol-2-yl)-methanimine with the ruthenium precursor [RuCl2(η6-p-cymene)]2 in a mixture of the corresponding alcohol and CH2Cl2 at 50 °C. The obtained complexes were fully characterized by elemental analysis, infrared, NMR and mass spectrometry. Solid-state structures confirmed the coordination of the 1,3,4-oxadiazole moiety to the ruthenium center via their electronically enriched nitrogen atom at position 3 in the aromatic ring. These complexes were evaluated as precatalysts in the Lemieux-Johnson type oxidative cleavage of olefins and alkynes in water at room temperature with NaIO4 as oxidizing agent. Good to full conversions of olefins into the corresponding aldehydes were measured, but low catalytic activity was observed in the case of alkynes. In order to get more insight into the mechanism, three analogue arene-ruthenium complexes were synthesized and tested in the oxidative cleavage of styrene. The latter tests clearly demonstrated the importance of the hemilabile alkyloxy groups, which may form more stable (N,O)-chelate intermediates and increase the efficiency of the cis-dioxo-ruthenium(VI) catalyst.
Indium Catalyzed Sequential Regioselective Remote C?H Indolylation and Rearrangement Reaction of Peroxyoxindole
Shaikh, Moseen A.,Ubale, Akash S.,Gnanaprakasam, Boopathy
supporting information, p. 4876 - 4882 (2021/09/14)
Indium-catalyzed sequential remote C?H functionalization (C-6 position) and C3-indolylation of peroxyoxindole using indole is described for the synthesis of terindolinone derivatives. Whereas, N-substituted 3-phenyl peroxyoxindole derivatives undergoes consecutive skeletal rearrangement to generate transient carbocation, which has been trapped with indole nucleophile to generate 2-(1H-indol-3-yl)-4-alkyl-benzo[b][1,4]oxazin-3(4H)-one derivatives. In contrast with Indium (III) Chloride, FeCl3 ? 6H2O facilitates oxidative cleavage of the peroxyoxindole (Hock cleavage) and further reaction with indole to afford biologically important trisindoline derivatives. A plausible mechanism has been proposed for these reactions with experimental evidences. (Figure presented.).
METHOD FOR OXIDATIVE CLEAVAGE OF COMPOUNDS WITH UNSATURATED DOUBLE BOND
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Paragraph 0071; 0077, (2021/07/10)
A method for oxidative cleavage of a compound with an unsaturated double bond is provided. The method includes the steps of: (A) providing a compound (I) with an unsaturated double bond, a trifluoromethyl-containing reagent, and a catalyst; wherein, the catalyst is represented by Formula (II): M(O)mL1yL2z??(II);wherein, M, L1, L2, m, y, z, R1, R2 and R3 are defined in the specification; and(B) mixing the compound with an unsaturated double bond and the trifluoromethyl-containing reagent to perform an oxidative cleavage of the compound with the unsaturated double bond by using the catalyst in air or under oxygen atmosphere condition to obtain a compound represented by Formula (III):
