Nucleophilic Cleavage of Substituted Benzyltrimethylsilanes using Tetraalkylammonium Fluoride in DMSO-H2O Media",

Journal Title, Volume, Page:

Pak. J. Appl. Sci.,

Year of Publication:

2003

Link:

http://docsdrive.com/pdfs/ansinet/jas/2004/193-196.pdf

Authors:

F.M.Mahmoud

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

Mohammed Al-Nuri

Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine

J. A. Daraghmah

Preferred Abstract (Original):

The nucleophilic cleavage of substituted benzyltrimethyl-silanes in DMSO-H2O media using tetraalkylammonium fluoride, TAAF, has been studied. The observed rate constants, pseudo first order rate constants, activation, and thermodynamic parameters have been reported. A mechanism for such cleavage has been proposed. The results fit well Hammett equation. The reaction constant, p, value of (6.7) has been reported. The p value is consistent with a substantial negative charge developing in the transition state.

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Nucleophilic Cleavage of Substituted Benzyltrimethylsilanes using Tetraalkylammonium Fluoride in DMSO-H2O Media",