17530-80-2Relevant academic research and scientific papers
Synthesis, spectral characterization, crystal structure and catalytic activity of a novel dioxomolybdenum Schiff base complex containing 4-aminobenzhydrazone ligand: A combined experimental and theoretical study
Ali, Saqib,Ashfaq, Muhammad,Behjatmanesh-Ardakani, Reza,Fallah-Mehrjardi, Mehdi,Kargar, Hadi,Munawar, Khurram Shahzad,Nateghi-Jahromi, Maryam,Tahir, Muhammad Nawaz
, (2021/10/16)
A novel dioxomolybdenum Schiff base complex, [MoO2(L)(H2O)], was synthesized by the reaction of MoO2(acac)2 and an ONO donor Schiff base ligand (H2L: (E)-4-amino-N'-(3-ethoxy-2-hydroxybenzylidene)benz
Molybdenum(VI) complexes with tridentate Schiff base ligands derived from isoniazid as catalysts for the oxidation of sulfides: synthesis, X-ray crystal structure determination and spectral characterization
Kargar, Hadi
, (2021/08/16)
Two new complexes, including [MoO2(L1)(CH3OH)] and [MoO2(L2)(CH3OH)], with tridentate ONO–donor Schiff base ligands (H2L1: (E)-N'-(2-hydroxy-3-methoxybenzylidene)isoni
Experimental and theoretical studies of new dioxomolybdenum complex: Synthesis, characterization and application as an efficient homogeneous catalyst for the selective sulfoxidation
Ashfaq, Muhammad,Behjatmanesh-Ardakani, Reza,Fallah-Mehrjardi, Mehdi,Kargar, Hadi,Munawar, Khurram Shahzad,Tahir, Muhammad Nawaz
, (2021/08/23)
A new dioxomolybdenum(VI) complex with tridentate ONO-donor Schiff base ligand derived from isoniazid has been synthesized and characterized by elemental analyses, FT-IR and 1H NMR, and its solid state structure was confirmed by single crystal
Modification of magnetic nanoparticles surface by oxovanadium(V) complex as a highly efficient heterogeneous nanocatalyst for the green sulfoxidation of sulfides
Fallah-Mehrjardi, Mehdi,Kargar, Hadi
, (2021/10/27)
The present study describes the synthesis of a new nanomagnetic-supported oxovanadium(V) complex with the tridentate Schiff base ligand derived from the condensation reaction between 5-bromosalicylaldehyde and nicotinic acid hydrazide. The supported compl
Palladium/PC-Phos-Catalyzed Enantioselective Arylation of General Sulfenate Anions: Scope and Synthetic Applications
Wang, Lei,Chen, Mingjie,Zhang, Peichao,Li, Wenbo,Zhang, Junliang
, p. 3467 - 3473 (2018/03/13)
Herein we reported an efficient palladium-catalyzed enantioselective arylation of both alkyl and aryl sulfenate anions to deliver various chiral sulfoxides in good yields (up to 98%) with excellent enantioselectivities (up to 99% ee) by the use of our developed chiral O,P-ligands (PC-Phos). PC-Phos are easily prepared in short steps from inexpensive commercially available starting materials. The single-crystal structure of the PC4/PdCl2 showed that a rarely observed 11-membered ring was formed via the O,P-coordination with the palladium(II) center. The salient features of this method include general substrate scope, ease of scale-up, applicable to the late-stage modification of bioactive compounds, and the synthesis of a marketed medicine Sulindac.
Synthesis of: N -alkylated 2-pyridones through Pummerer type reactions of activated sulfoxides and 2-fluoropyridine derivatives
Hu, Gang,Xu, Jiaxi,Li, Pingfan
, p. 4151 - 4158 (2018/06/12)
N-Alkylated 2-pyridone products were obtained in good to excellent yields through a one-pot procedure involving either normal or interrupted Pummerer reactions between triflic anhydride activated sulfoxides and 2-fluoropyridine derivatives, followed by hydrolysis. This is a rare case that uses 2-fluoropyridine as a nucleophile in Pummerer type reactions.
Photosensitized oxidation of aryl benzyl sulfoxides. Evidence for nucleophilic assistance to the c-s bond cleavage of aryl benzyl sulfoxide radical cations
Del Giacco, Tiziana,Lanzalunga, Osvaldo,Lapi, Andrea,Mazzonna, Marco,Mencarelli, Paolo
, p. 2310 - 2318 (2015/09/08)
The radical cations of a series of aryl benzyl sulfoxides (4-X-C6H4CH2SOC6H4Y+?) have been generated by photochemical oxidation of the parent sulfoxides sensitized by 3-cyano-N-methylquinolinium perchlorate (3-CN-NMQ+ClO4-). Steady-state photolysis experiments showed the prevailing formation of benzylic products deriving from the C-S fragmentation in the radical cations, together with sulfur-containing products. Formation of sulfoxide radical cations was unequivocally established by laser flash photolysis experiments showing the absorption bands of 3-CN-NMQ? (λmax = 390 nm) and of the radical cations (λmax = 500-620 nm). The decay rate constants of radical cations, determined by LFP experiments, decrease by increasing the electron-donating power of the arylsulfinyl Y substituent and to a smaller extent by increasing the electron-withdrawing power of the benzylic X substituent. A solvent nucleophilic assistance to the C-S bond cleavage has been suggested, supported by the comparison of substituent effects on the same process occurring in aryl tert-butyl sulfoxide radical cations. DFT calculations, performed to determine the bond dissociation free energy in the radical cations, the transition state energies associated with the unimolecular C-S bond cleavage, and the charge and spin delocalized on their structures, were also useful to endorse the nucleophilic assistance to the C-S scission.
Palladium-catalyzed direct arylation of methyl sulfoxides with aryl halides
Jia, Tiezheng,Bellomo, Ana,Baina, Kawtar El,Dreher, Spencer D.,Walsh, Patrick J.
supporting information, p. 3740 - 3743 (2013/04/10)
The palladium-catalyzed α-arylation of unactivated sulfoxides has been developed. The weakly acidic α-protons of sulfoxides are reversibly deprotonated by LiOtBu, and a palladium phosphine complex facilitates the arylation. A variety of aryl methyl sulfoxides were coupled with aryl bromides. More challenging coupling partners, such as alkyl methyl sulfoxides (including dimethyl sulfoxide) and aryl chlorides proved to be suitable under the optimized conditions. This method was utilized to synthesize bioactive benzyl sulfoxide intermediates.
