Synthesis and reactivity of metallacyclic manganese .alpha.-(silyloxy)alkyl complexes [cyclic] (CO)4MnC(R)(OSi(CH3)3)P(C6H5)2.  A new thermodynamic driving force for carbonyl insertion

Vaughn, George D.; Krein, K. Alex; Gladysz, J. A.

doi:10.1021/om00136a016

Cited by 41 publications

(20 citation statements)

References 1 publication

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“…n-Pentane, n-hexane and cyclopentane were dried over LiAlH 4 , toluene over Na/ benzophenone. The aluminum dihydride 1 [8], neopentyllithium [15], trimethylsilylmethyllithium [16] and LiC(SiMe 3 ) 3 Á 2THF [17] were obtained according to literature procedures. Commercially available solutions of tert-butyl hydrogenperoxide (5.5 M in nonane, Aldrich) were stored over molecular sieves prior to use.…”

Section: Methodsmentioning

confidence: 99%

Reactions of β-diketiminatoaluminum hydrides with tert-butyl hydrogenperoxide – Facile formation of dialuminoxanes containing Al–O–Al groups

Uhl

Jana

2009

Journal of Organometallic Chemistry

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Section: Methodsmentioning

confidence: 99%

Reactions of β-diketiminatoaluminum hydrides with tert-butyl hydrogenperoxide – Facile formation of dialuminoxanes containing Al–O–Al groups

Uhl

Jana

2009

Journal of Organometallic Chemistry

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“…LiCH 2 SiMe 3 were prepared according to the procedure described in the literature. 19 Anhydrous ZnCl 2 and NMR solvent C 6 D 6 were purchased from Sigma Aldrich. C 6 D 6 was dried under Na/K alloy prior to use.…”

Section: General Informationmentioning

confidence: 99%

Amidinate Ligands in Zinc coordination sphere: Synthesis and structural diversity

2016

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A one-pot reaction involving neosilyllithium and three different carbodiimides (RN=C=NR, R = cyclohexyl, isopropyl and tert-butyl) in diethyl ether, followed by the addition of anhydrous ZnCl 2, afforded, in high yield, corresponding homoleptic zinc amidinate complexes having the molecular formulae [Zn{CyN=C(CH 2 SiMe 3)NCy} 2 ] (1), [Zn{ i PrN=C(CH 2 SiMe 3)N i Pr} 2 ] (2) and [Zn{ t BuN=C(CH 2 SiMe 3) N t Bu} 2 ] (3), respectively, and amidinato moieties in the zinc coordination sphere. Solid state structures of complexes 1-3 are reported thereafter-all the three complexes are isostructural, and each of them consists of two four-membered metallacycles.

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“…a 60°C. 43,[14876][14877][14878][14879][14880][14881][14882][14883][14884][14885][14886][14887][14888] This journal is © The Royal Society of Chemistry 2014…”

Section: Catalytic Hydrosilylation Of Alkenesmentioning

confidence: 99%

“…Elemental analyses were performed on a BRUKER EURO EA at the Indian Institute of Technology, Hyderabad. The (Li 2 DippDAD) 42 and [LiCH 2 -SiMe 3 ] 43 were prepared according to the literature procedures. TiCl 4 , ZrCl 4 , CpTiCl 3 , Cp 2 TiCl 2 , Cp 2 ZrCl 2 and the NMR solvents CDCl 3 and C 6 D 6 were purchased from Sigma Aldrich.…”

Section: General Considerationmentioning

confidence: 99%

Titanium and zirconium complexes of the N,N′-bis(2,6-diisopropylphenyl)-1,4-diaza-butadiene ligand: syntheses, structures and uses in catalytic hydrosilylation reactions

et al. 2014

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We report here a number of dianionic 1,4-diaza-1,3-butadiene complexes of titanium and zirconium synthesised by a salt metathesis reaction. The reaction of either CpTiCl3 or Cp2TiCl2 with the dilithium salt of N,N'-bis(2,6-diisopropylphenyl)-1,4-diaza-1,3-butadiene [; abbreviated (Dipp)2DADLi2] afforded the mono-cyclopentadienyl titanium complex [η(5)-CpTi((Dipp)2DAD)Cl] () bearing a dianionic ene-diamide ligand, while the analogous reaction of zirconocene dichloride (Cp2ZrCl2) with the dilithium salt gave the bis-cyclopentadienyl zirconium complex [Cp2Zr{(Dipp)2DAD}] (). The metal dichloride complexes [Ti((Dipp)2DAD)Cl2] () and [{(Dipp)2DADZrCl(μ-Cl)}2(κ(3)-Cl)(Li)(OEt2)2] () were obtained by the reaction of and anhydrous metal tetrachloride in a 1 : 1 molar ratio in diethyl ether at room temperature. Meanwhile, the homoleptic titanium complex [Ti{((Dipp)2DAD)}2] () was isolated in good yield by the treatment of with TiCl4 in a 1 : 2 molar ratio in diethyl ether. The complexes and were further reacted with neosilyl lithium to afford mono- and bis-alkyl complexes of titanium [η(5)-CpTi{(Dipp)2DAD}(CH2SiMe3)] () and zirconium [Zr{(Dipp)2DAD}(CH2SiMe3)2] () respectively. Molecular structures of the complexes , , and in the solid states were confirmed by single crystal X-ray diffraction analysis. The solid state structures of all the complexes reveal that the metal ions are chelated through the amido-nitrogen atoms and the olefinic carbons of the [(Dipp)2DAD](2-) moiety, satisfying the σ(2),π coordination mode. Compound was used as a catalyst for the intermolecular hydrosilylation reaction of a number of olefins, and moderate activity of catalyst was observed.

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Synthesis and reactivity of metallacyclic manganese .alpha.-(silyloxy)alkyl complexes [cyclic] (CO)4MnC(R)(OSi(CH3)3)P(C6H5)2. A new thermodynamic driving force for carbonyl insertion

Cited by 41 publications

References 1 publication

Reactions of β-diketiminatoaluminum hydrides with tert-butyl hydrogenperoxide – Facile formation of dialuminoxanes containing Al–O–Al groups

Reactions of β-diketiminatoaluminum hydrides with tert-butyl hydrogenperoxide – Facile formation of dialuminoxanes containing Al–O–Al groups

Amidinate Ligands in Zinc coordination sphere: Synthesis and structural diversity

Titanium and zirconium complexes of the N,N′-bis(2,6-diisopropylphenyl)-1,4-diaza-butadiene ligand: syntheses, structures and uses in catalytic hydrosilylation reactions

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