Ruthenium(III) mediated C–H activation of azonaphthol: Synthesis, structural characterization and transfer hydrogenation of ketones

Kannan, Sethuraman; Ramesh, Rengan; Liu, Yu

doi:10.1016/j.jorganchem.2007.04.042

Cited by 58 publications

(35 citation statements)

References 73 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[1][2][3][4][5][6] An investigation of the literature of trivalent ruthenium organometallic complexes revealed that the complexes are formed through C-H activation and the concomitant formation of a σ-aryl ruthenium-carbon bond. It has been found that in the case of ruthenium(III) cyclometalates derived from Schiff-base ligands, the metal-carbon bond is established through orthometallation with the phenyl ring that has an aldehyde functional group, see Scheme 1 (A), X = CH, Type 1.…”

Section: Introductionmentioning

confidence: 99%

“…In these types of complexes, orthometallation is observed with the ring that has been contributed by the aromatic amine during the azo coupling reaction, as shown in Scheme 1 (A), X = N, Type 2. [4,6] In both cases either para-substituted benzaldehyde, during Schiff-base formation, or para-substituted aromatic amines were used during the ligand synthesis. Hence, for the synthesis of the ruthenium complexes, a single site for orthometallation was found to be available in both the type 1 and type 2 ligands.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ruthenium(III) Cyclometalates Obtained by Site‐Specific Orthometallation and Their Reactivity with Nitric Oxide: Photoinduced Release and Estimation of NO Liberated from the Ruthenium Nitrosyl Complexes

Ghosh

Kumar

2012

Eur J Inorg Chem

View full text Add to dashboard Cite

Cyclometalated RuIII complexes [Ru(LSB1)(PPh3)2Cl] (1), [LSB1H2 = 2‐(3‐nitrobenzylideneamino)phenol], and [Ru(LSB2)(PPh3)2Cl] (2), [LSB2H2 = 4‐methyl‐2‐(3‐nitrobenzylideneamino)phenol and H = dissociable protons], were synthesized by site‐specific orthometallation and characterized by spectroscopic and electrochemical studies. Complexes 1 and 2 were treated with in situ generated nitric oxide (NO), derived from an acidified nitrite solution, which afforded the ruthenium nitrosyl complexes [Ru(LSB3H)(PPh3)2(NO)Cl](ClO4) (1a) and [Ru(LBOX)(PPh3)2(NO)Cl](ClO4) (2a), respectively, [LSB3H2 = 4‐nitro‐2‐(3‐nitrobenzylideneamino)phenol, LBOXH = 5‐methyl‐7‐nitro‐2‐(3‐nitrophenyl)benzoxazole and H = dissociable protons]. Complexes 1a and 2a were found to be diamagnetic and were characterized by 1H NMR and 31P NMR spectral studies. Both 1a and 2a exhibited νNO in the range 1800–1835 cm–1 in the IR spectra. Molecular structures of σ‐aryl ruthenium nitrosyl complexes 1a·CH3OH·2CH2Cl2·H2O and 2a·2CH2Cl2 were determined by X‐ray crystallography. Nitrosylation at the metal centre, oxidative cyclization and ligand nitration were authenticated from the crystal structures. The redox properties of the metal centre were investigated. In both the nitrosyl complexes 1a and 2a, coordinated NO was found to be photolabile. The amount of photoreleased NO was estimated by using the Griess reagent and the data was compared with that obtained from sodium nitroprusside (SNP). The role of the nitro group in the ligand frame was discussed with regard to orthometallation, NO reactivity and photolability.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ruthenium(III) Cyclometalates Obtained by Site‐Specific Orthometallation and Their Reactivity with Nitric Oxide: Photoinduced Release and Estimation of NO Liberated from the Ruthenium Nitrosyl Complexes

Ghosh

Kumar

2012

Eur J Inorg Chem

View full text Add to dashboard Cite

show abstract

“…[17,20] Among the different metals catalyzing this reaction, ruthenium-based systems are found to be effective. [21][22][23] However, in many cases, double bond isomerization occurs as an undesired side reaction with the result that two reactions can be performed by the same catalyst.…”

Section: Introductionmentioning

confidence: 99%

O,N‐Bidentate Ruthenium Azo Complexes as Catalysts for Olefin Isomerization Reactions

2010

View full text Add to dashboard Cite

show abstract

“…Schiff bases and their complexes are of high interest among the researchers because of their biological activity including anti-tumor, antibacterial, fungicidal, antidepressants, antiphlogogistic, nematocide, anti-carcinogenic and catalytic activity [1][2].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Antibacterial Study of Some Schiff Bases Complexes

Ambhure¹,

Mirgane²,

Thombal³

et al. 2017

MOCR

View full text Add to dashboard Cite

Abstract. Novel Schiff bases (E)-N-(4-chlorobenzylidene)-2-(2,4-dichlorophenyl) acetohydrazide and (E)-2-(2,4-dichlorophenyl)-N'-((1-methoxynaphthalen-2-yl)methylene)acetohydrazide were synthesized and further used for the synthesis of metal complexes. All these synthesized Schiff bases and metal complexes were characterized and screened for antimicrobial activity against bacteria Escherichia coli, Pseudomonas aeruginosa, and Bacillus subtilis.

show abstract

Ruthenium(III) mediated C–H activation of azonaphthol: Synthesis, structural characterization and transfer hydrogenation of ketones

Cited by 58 publications

References 73 publications

Ruthenium(III) Cyclometalates Obtained by Site‐Specific Orthometallation and Their Reactivity with Nitric Oxide: Photoinduced Release and Estimation of NO Liberated from the Ruthenium Nitrosyl Complexes

Ruthenium(III) Cyclometalates Obtained by Site‐Specific Orthometallation and Their Reactivity with Nitric Oxide: Photoinduced Release and Estimation of NO Liberated from the Ruthenium Nitrosyl Complexes

O,N‐Bidentate Ruthenium Azo Complexes as Catalysts for Olefin Isomerization Reactions

Synthesis and Antibacterial Study of Some Schiff Bases Complexes

Contact Info

Product

Resources

About