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Journal of Organometallic Chemistry
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Abstract In a comparative study, the stability of lithiated methylpyridine and the reactivity of side chain functionalized 4-methylypridines were investigated. In contrast to gas phase calculations, the observed N-coordination of the lithium to 4-methylpyridine anions is shown to be a solvent effect. Furthermore, lithiated methylpyridines are predicted to be dimeric in THF. The regioselectivity of the picoline anion alkylation was subject to an in-depth study. The activation barriers for the met...
#1Mohammad Ali Ghasemzadeh (IAU: Islamic Azad University)H-Index: 11
#2Mina Azimi-Nasrabad (IAU: Islamic Azad University)H-Index: 1
Last.Boshra Mirhosseini-Eshkevari (IAU: Islamic Azad University)H-Index: 4
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Abstract The NiCo2O4@Ni(BDC) metal-organic frameworks as a suitable and green catalyst have been developed for the one-pot synthesis of 2,4-diamino-6-arylpyrimidine-5-carbonitrile derivatives. The multi-component reactions of aldehydes, malononitrile and guanidine hydrochloride were efficiently catalyzed using a novel metal-organic framework under reflux conditions. Simple procedures, high yields, short reaction times, and reusability of the catalyst are advantages of this protocol. The catalyst...
#1Patricia Toro (UCV: Pontifical Catholic University of Valparaíso)H-Index: 2
#2Alejandra Acuña (UCV: Pontifical Catholic University of Valparaíso)H-Index: 2
Last.Hugo Klahn (UCV: Pontifical Catholic University of Valparaíso)H-Index: 3
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Abstract The reaction of 5-bromo-4-nitrofuraldehyde (4-NO2) with (η5-C5H4NH2)Fe(η5-C5H5) produces the Schiff base [(η5-C5H4)-N =CH-(Br-NO2-2-C4HO)]Fe(η5-C5H5) (1a) as a condensation product and the amine complex [(η5-C5H4)-NH-(CHO-NO2-2-C4HO)]Fe(η5-C5H5) (1b) as a substitution product in a 1:4 ratio, whereas the reaction between 4-bromo-5-nitrofuraldehyde (5-NO2) and (η5-C5H4NH2)Fe(η5-C5H5) generates only the iminic derivative (2a). The structures of all the complexes were inferred from their FT...
#1Banafshe Askari (UI: University of Isfahan)H-Index: 5
#2Hadi Amiri Rudbari (UI: University of Isfahan)H-Index: 21
Last.Michele Navarra (UNIME: University of Messina)H-Index: 25
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Abstract Three heterobimetallic platinum (II)/ruthenium (II) and platinum (II)/rhodium (III) complexes, A: Pt{S–S2C2(NR)2H}{μ-S2C2(NR)2}-[Ru (p-cymene)Cl], R = isoamyl; B: Pt{S–S2C2(NR)2H}{μ-S2C2(NR)2}[Rh (phpy)2], R = isoamyl; C: [Pt{S–S2C2(NR)2H}{μ-S2C2(NR)2}-[Rh(C5Me5)Cl]], R = benzyl, prepared from mononuclear complexes 1 and 2, 1: [Pt (H-isoamyl2DTO)2]; 2: [Pt (H-benzyl2DTO)2], DTO = dithiooxamide, by reaction of 1 or 2 with the corresponding chlorido-bridged dimers, [Rh(C5Me5)Cl (μ-Cl)]2, ...
Abstract The metathesis reaction of IrCl(CO)(PPh3)2 (4) and Vaska-type derivatives IrCl(CO)(PR3)2 (PR3 = MePh2, 5; Me2Ph, 6; Me3, 7) with 1–2 equivalents of the potassium butadienesulfinate salts K(SO2CHCRCHCH2) (R = H, 2; Me, 3) led to the formation of mixtures of chiral diastereomers “a” and “b” of general formula Ir(1–2,5-η-CH2CHCRCHSO2)(CO)(L)2 (R = H, L = PPh3, 8a,b; PMePh2, 9a,b; PMe2Ph, 10a,b; PMe3, 11a,b; R = Me, L = PPh3, 12a,b; PMePh2, 13a,b; PMe2Ph, 14a,b; PMe3, 15a,b) In isomer “a” b...
#1Ryo Horikoshi (Osaka Sangyo University)
#2Ryo Sumitani (Kobe University)
Last.Tomoyuki Mochida (Kobe University)H-Index: 27
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Abstract Ferrocene-based metalloligands have various applications in material sciences due to their stability in air and redox active properties. Two ferrocene-based compounds, 1,2-bis(dimethyldithiocarbamate)ferrocene (1) and 1,2-bis(benzothiazol-2-ylthio)ferrocene (2), were synthesized from 1,1′-dibromoferrocene and the corresponding disulfides via two steps. The reaction of 1 with PdCl2(PhCN)2 formed a 1:1 metal:ligand complex, [PdCl2(1)]. Compounds 1,2, and [PdCl2(1)] were structurally chara...
#1Sepideh Samiee (Shahid Chamran University of Ahvaz)H-Index: 7
#2Ahmadreza Shiralinia (Shahid Chamran University of Ahvaz)
Last.Robert W. Gable (University of Melbourne)H-Index: 20
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Abstract In the present investigation, the reactivity of an oxime-derived palladacycle [Pd{C,N–C6H4{C(Me) = NOH}-2}(μ-Cl)]2 toward various unsymmetrical phosphorus ylides has been studied. When the ylide was added to a solution of oxime complex in dichloromethane (2:1 ratio), the new oxime palladacycles of the types [Pd{C,N–C6H4{C(Me) = NOH}-2}(Ph2PCH2PPh2C(H)C(O)C6H4X)]ClO4 (X = Cl (1), Br (2), NO2(3) or OCH3 (4)) were formed by means of bridge-splitting reaction. These are the first descriptio...
#1Nuray Yılmaz Baran (Aksaray University)H-Index: 8
#2Talat Baran (Aksaray University)H-Index: 24
Last.Rajender S. Varma (Palacký University, Olomouc)H-Index: 19
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Abstract Palladium nanoparticles (Pd NPs) were decorated on Schiff base-modified boehmite (Sch-boehmite) particles via a simple method without deploying any additional reducing agents and their structure was confirmed by different characterization methods. The ensuing Pd NPs@Sch-boehmite was evaluated as a retrievable catalyst for multiple cycles in Suzuki cross-coupling reactions with extensive substrate tolerance to produce biaryls in high yields within 6 min, and the reduction of 2-nitroanili...
#1Faezeh Khosravi (IASBS: Institute for Advanced Studies in Basic Sciences)
#2Mohammad Gholinejad (IASBS: Institute for Advanced Studies in Basic Sciences)H-Index: 21
Last.José M. Sansano (University of Alicante)H-Index: 30
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Abstract The 1-butyl-3-methyl-2-(diphenylphosphino)imidazalolium hexafluorophosphate is prepared and used as a water-soluble ligand in the Suzuki-Miyaura reaction. This ligand and palladium chloride generates a new active catalyst for the Suzuki coupling reaction between aryl iodides or bromides with arylboronic acids in neat water. This catalyst can be recycled and reused for the coupling reaction of 4-bromobenzonitrile with phenylboronic acid for at least six runs with low decreasing in cataly...
#1Purna Chandra Rao Vasireddy (UND: University of North Dakota)
#2Gerard C. Dickmu (UND: University of North Dakota)H-Index: 3
Last.Irina P. Smoliakova (UND: University of North Dakota)H-Index: 11
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Abstract N,N-Dimethylhydrazone of D-camphor 1 was obtained as the single E isomer in 80% yield by treating the enantiopure ketone with N,N-dimethylhydrazine in the presence of an equimolar amount of p-toluenesulfonic acid in ethanol. Direct cyclopalladation of hydrazone 1 was accomplished at the C(3)H2 group using [Pd(MeCN)2Cl2] and NaOAc in MeCN at the reflux temperature. The product of the reaction, dinuclear cyclopalladated complex 2, was isolated in 89% yield as a mixture of diastereoisomers...
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