Photochemical .alpha.-hydride abstraction

Chamberlain, L. R.; Rothwell, Arlene P.; Rothwell, Ian P.

doi:10.1021/ja00318a055

Cited by 46 publications

(45 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A mechanism involving a-hydride elimination is attractive from the point of view of its analogy to similar eliminations observed with the alkyls of lighter transition element metallocenes (16) and from the fact that eq. [ 2 ] is not possible for a secondary silane beyond the first homologation step.…”

Section: The Mechanism Of the Polymerization Reactionmentioning

confidence: 99%

Structural studies of oligosilanes produced by catalytic dehydrogenative coupling of primary organosilanes

Aitken¹,

Harrod²,

Gill³

1987

Can. J. Chem.

View full text Add to dashboard Cite

The structures of some poly(organosilylenes), [Formula: see text] (R = Ph, p-tolyl, n-hexyl, and benzyl), produced by catalytic dehydrogenative coupling of primary silanes have been studied by infrared, nuclear magnetic resonance, and mass spectroscopies. These results, combined with data on molecular weights and molecular weight distributions from vapour pressure osmometry and gel permeation chromatography, lead to the conclusion that the polymers are linear and have SiH2R end groups. The polymers all have degrees of polymerization of ca. 10 and very narrow molecular weight dipersions. Some possible features of the mechanism that gives rise to this behaviour are discussed.

show abstract

Section: The Mechanism Of the Polymerization Reactionmentioning

confidence: 99%

Structural studies of oligosilanes produced by catalytic dehydrogenative coupling of primary organosilanes

Aitken¹,

Harrod²,

Gill³

1987

Can. J. Chem.

View full text Add to dashboard Cite

show abstract

“…156 From complex 39, cyclometalation takes place already at room temperature (cf. 150 °C for the formation of 38) and yields the monocyclometalated complex 37.…”

mentioning

confidence: 99%

Cyclometalation Using d-Block Transition Metals: Fundamental Aspects and Recent Trends

2009

View full text Add to dashboard Cite

show abstract

“…10 However, ring formation has not been observed in Ti halide phenoxy complexes, even at high temperatures. 11 We replaced one Cl ligand in TiCl 4 with a bulky phenoxy ligand to obtain a Ti d 0 complex. The complex was activated with MAO and tested as a homogeneous catalyst for polymerization of styrene and copolymerization of styrene and ethylene.…”

mentioning

confidence: 99%

Polymerization of a styrene and ethylene mixture with a trichloro(2,6-di-tert-butylphenoxy)titanium/methylaluminoxane catalyst system

Aaltonen¹,

Seppälä²,

Matilainen³

et al. 1994

Macromolecules

View full text Add to dashboard Cite

A homogeneous titanium halide catalyst containing one bulky phenoxy ligand was synthesized by the reaction of a lithium salt of 2,6-di-tert-butylphenol and TiC1 4 • The complex was tested, with methylaluminoxane as cocatalyst, in the copolymerization of ethylene and styrene. The reaction product was not a copolymer but a mixture of polyethylene and atactic polystyrene. The formation of two fractions may indicate the presence of several active species in the catalyst or a different polymerization mechanism for the two monomers.

show abstract

Photochemical .alpha.-hydride abstraction

Cited by 46 publications

References 0 publications

Structural studies of oligosilanes produced by catalytic dehydrogenative coupling of primary organosilanes

Structural studies of oligosilanes produced by catalytic dehydrogenative coupling of primary organosilanes

Cyclometalation Using d-Block Transition Metals: Fundamental Aspects and Recent Trends

Polymerization of a styrene and ethylene mixture with a trichloro(2,6-di-tert-butylphenoxy)titanium/methylaluminoxane catalyst system

Contact Info

Product

Resources

About