Novel polymer-supported β-dithioketonate nickel catalysts for selective propylene dimerization

Benvenuti, Federica; Carlini, Carlo; Marchionna, Mario; Galletti, Anna Maria Raspolli; Sbrana, Glauco

doi:10.1002/(sici)1099-1581(199909)10:9<554::aid-pat916>3.0.co;2-8

Cited by 11 publications

(6 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[12] In general, complexes containing chelating unsaturated dithio ligands are of great interest because they exhibit a high degree of covalent bonding with extensive delocalized electrons. First, the nature of the dithiochelate ligand, which is uncommon.…”

Section: Resultsmentioning

confidence: 99%

“…It exhibits analogies with dithio‐ketonates except for the fact that one function is a thioamide. Dithio‐ketonates are also uncommon ligands, although they have been used to generate some nickel complexes with interesting catalytic properties 12. In general, complexes containing chelating unsaturated dithio ligands are of great interest because they exhibit a high degree of covalent bonding with extensive delocalized electrons.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

C–S and C–Se Bond Formation at Bridging Vinyliminium Ligands in Diiron Complexes

2013

View full text Add to dashboard Cite

The vinyliminium complexes [Fe2{μ-η1:η3-C(R)C(R)CN-(Me)2}(μ-CO)(CO)(Cp)2][SO3CF3] (R = Me, 3a;R=CO2Me,\ud 3b; R = Ph, 3c) were treated with S8 in the presence oftBuLi,\ud undergoing fragmentation and affording the corresponding\ud six-membered metallacyclic complexes [Fe(Cp)(CO){SC-(R)=C(R)C(NMe2)S}] (5a–c). Complexes 5a–c result from\ud cleavage of the diiron precursor and addition of S to the vi-nyliminium ligand to generate a dithiochelating ligand.\ud Analogous reactions of the vinyliminium complexes [Fe2{μ-η\ud 1:η3-C(R)C(R)CN(Me)(Xyl)}(μ-CO)(CO)(Cp)2][SO3CF3](R=\ud Me,3d; R=CO2Me,3e), which contain a Xyl group (Xyl\ud = 2,6-Me2C6H3) in place of a methyl, displayed a different\ud outcome. Complex3dafforded the diiron complex [Fe2{μ-η\ud 1:η3-C(Me)=C(CS2)C=N(Me)(Xyl)}(μ-CO)(CO)(Cp)2](10),\ud whereas3eled to the formation of the five-membered metalla-cycle [Fe(Cp)(CO){C{N(Me)(Xyl)}C(CO2Me)C(CO2Me)S}]\ud (11) together with the diiron complex [Fe2{μ-η\ud 1\ud :η\ud 3\ud -C-(CO2Me)=C(S)C=N(Me)(Xyl)}(μ-CO)(CO)(Cp)2](12). The\ud formation of 10 and 12 implies C–H and C–C cleavage,\ud respectively, and C–S bond formation without rupture of the\ud diiron framework. The vinyliminium complexes3a–dand\ud also [Fe2{μ-η1:η3-C(Et)C(Et)CN(Me)(CH2Ph)}(μ-CO)(CO)-(Cp)2][SO3CF3](3f) reacted with gray selenium in the pres-ence of tBuLi to afford the five-membered metallacycles [Fe(Cp)(CO){C{N(Me)R}C(R)C(R)Se}] (R = R = Me,13a;R\ud = Me, R =CO2Me,13b;R=Me, R = Ph,13c; R = Xyl, R =\ud Me,13d;R=CH2Ph, R=Et,13f) in which one Se atom has\ud been incorporated into the chelating ligand. The X-ray mo-lecular structures of 5a and13a have been determined

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

C–S and C–Se Bond Formation at Bridging Vinyliminium Ligands in Diiron Complexes

2013

View full text Add to dashboard Cite

show abstract

“…with suitable Lewis acidity, as for example Et 2 AlCl) revealed higher activity (turn-over frequency, TF = 74,000 h −1 ) and similar selectivity (~80%) towards DMB in comparison to the homogeneous catalyst [77,78]. The co-catalyst is not a requisite but it increases activity and probably prevents decomposition of the metal complex, hence metal leaching from the polymer matrix is negligible [77][78][79].…”

Section: Propene Oligomerizationmentioning

confidence: 96%

“…6) [77,79]. In this method the nature of the phosphine ligand and the P/Ni molar ratio are easily controlled which in turn enables the modification of the catalyst's properties [77].…”

Section: Propene Oligomerizationmentioning

confidence: 99%

Alkenes oligomerization with resin catalysts

Antunes

Rodrigues

Lin

et al. 2015

Fuel Processing Technology

View full text Add to dashboard Cite

“…The most common method for introducing chelating groups is the functionalization of some active resins, such as Merrifield resin, with chelating ligands. Although a large number of resins containing functional ligands, such as porphyrin,5, 6 Schiff bases,7, 8 diphosphine,9, 10 and diketones,11, 12 have been reported widely, less work has been focused on the support itself. In the literature, most chelating resins have been modified on Merrifield resin.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of chloroacetylated polystyrene‐supported zinc complexes and evaluation of their catalytic activities for the synthesis of 1,1‐diacetates

Wang

Cai

2009

J of Applied Polymer Sci

View full text Add to dashboard Cite

Zinc chloride was immobilized onto chloroacetylated polystyrene via different linkages to afford polymer-supported Lewis acid catalysts. The functionalized beads and the immobilized catalysts were characterized by elemental analysis, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and inductively coupled plasma and thermal analysis. The reaction of aldehydes with anhydride in the presence of the supported catalysts was investigated. The effects of various parameters, including the solvent, amount of catalyst, and temperature, on the reaction were also studied. We found that the reaction proceeded smoothly under solvent-free conditions at room temperature and afforded the corresponding acylals in good yields. Moreover, the catalysts could be recovered easily and reused several times without a significant loss in activity.

show abstract

Novel polymer-supported β-dithioketonate nickel catalysts for selective propylene dimerization

Cited by 11 publications

References 20 publications

C–S and C–Se Bond Formation at Bridging Vinyliminium Ligands in Diiron Complexes

C–S and C–Se Bond Formation at Bridging Vinyliminium Ligands in Diiron Complexes

Alkenes oligomerization with resin catalysts

Preparation and characterization of chloroacetylated polystyrene‐supported zinc complexes and evaluation of their catalytic activities for the synthesis of 1,1‐diacetates

Contact Info

Product

Resources

About