Silanes

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Homogeneous Catalysis of The Reaction of Silanes with Alcohols Using Mn2(CO)10

Authors: 
Shukri Khalaf
Department of Chemistry, An-Najah N. University, Nablus, PO Box 7, West Bank, Palestine
Current Affiliation: 
Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine
Mohammad Al Nuri
Department of Chemistry, An-Najah N. University, Nablus, PO Box 7, West Bank, Palestine
Hikmat S. Hilal
Department of Chemistry, An-Najah N. University, Nablus, PO Box 7, West Bank, Palestine
Maha Karmi
Department of Chemistry, An-Najah N. University, Nablus, PO Box 7, West Bank, Palestine
Preferred Abstract (Original): 

Dimanganese decacarbonyl catalyst has been evaluated in the reactions of HSiR3 (R = Et, OEt) with R'OH (R' = Me, Et, i-Pr, t-Bu and benzyl), under various conditions. The order of reactivity of the alcohols decreases when more bulky alkyl groups are used, and that of the silanes increases if a more electron-withdrawing group (OEt) is used. Kinetic analysis indicates that the reaction is first order with respect to the silane, to the alcohol and to the catalyst. The effects of varying the solvent and adding a phosphine ligand have also been investigated.

Hikmat S. Hilal's picture

Homogeneous Catalysis of The Reaction of Silanes with Alcohols Using Mn2(CO)10

Journal Title, Volume, Page: 
Journal of Molecular Catalysis Volume 35, Issue 2, May 1986, Pages 137-142
Year of Publication: 
2006
Authors: 
Hikmat S. Hilal
Chemistry Department, An-Najah National University, P. O. Box 7, Nablus, West Bankvia Israel
Current Affiliation: 
Department of Chemistry, An-Najah N. University, Nablus, PO Box 7, West Bank, Palestine
Shukri Khalaf
Department of Chemistry, An-Najah N. University, Nablus, PO Box 7, West Bank, Palestine
Mohammad Al Nuri
Department Of Chemistry, An-Najah N. University, Nablus, PO Box 7, West Bank, Palestine
Maha Karmi
Department of Chemistry, An-Najah N. University, Nablus, PO Box 7, West Bank, Palestine
Preferred Abstract (Original): 

Dimanganese decacarbonyl catalyst has been evaluated in the reactions of HSiR3 (R = Et, OEt) with R'OH (R' = Me, Et, i-Pr, t-Bu and benzyl), under various conditions. The order of reactivity of the alcohols decreases when more bulky alkyl groups are used, and that of the silanes increases if a more electron-withdrawing group (OEt) is used. Kinetic analysis indicates that the reaction is first order with respect to the silane, to the alcohol and to the catalyst. The effects of varying the solvent and adding a phosphine ligand have also been investigated.

Hikmat S. Hilal's picture

Silica-Supported Iridium-Phosphine Catalysts for the Reaction of the Silanes with Alcohols

Journal Title, Volume, Page: 
Journal Of Organometallic Chemistry Volume 228, Issue 2, 23 March 1982, Pages 191-201
Year of Publication: 
1982
Authors: 
H. S. Hilal
Department of Chemistry, The University of Manchester Institute of Science and Technology
Current Affiliation: 
Department of Chemistry, An-Najah N. University, Nablus, PO Box 7, West Bank, Palestine
J. Dwyer
Department of Chemistry, The University of Manchester Institute of Science and Technology
R. V. Parish
Department of Chemistry, The University of Manchester Institute of Science and Technology, Manchester, M60 1QD Great Britain
Preferred Abstract (Original): 

Silica-supported iridium catalysts have been evaluated in the reactions of HSiR3 (R  Et, OEt) and Me3SiO[Si(H)(Me)O]nSiMe3 (PS1, n  1; PS50, n ∼ 50) with awide variety of primary alcohols. Catalysts obtained by reaction of IrCl(CO)[Ph2P(CH2)2Si(OEt)3]2 with silica are rapidly deactivated in a manner similar to the related homogeneous systems. More active catalysts are obtinaed by treating the silica first with Ph2P(CH2)2Si(OEt)3 and then with [IrCl(C8H14)2]2. The order reactivity of the silanes is PS50 ⪢ HSi(OEt)3 > HSiEt3 ⪢ PS1, and that of the alcohols reflects principally the bulk of the organic group. Kinetic analysis indicates two pathways involving iridium bound to the phosphine and directly to the silica. The 29 Si{1H} NMR spectra of PS50 and the product of its reaction with Ph(CH2)2OH are reported.

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