Results 131 to 140 of about 2,406 (182)
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The mechanism of solvolysis of β-ketosilanes
Journal of Organometallic Chemistry, 1985Abstract Rates of cleavages of compounds of the type XC 6 H 4 COCH 2 SiR 3 have been measured spectrophotometrically at various temperatures. The cleavage of the SiC bond occurs readily in THF/H 2 O alone but it is also catalyzed by NaOH. The effects of substituents X correlate with their Hammett σ constants (ϱ= 2.2 and 0.77 in the neutral and the ...
Fiorenza Mariella +2 more
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Reactions of ion‐pair intermediates of solvolysis
The Chemical Record, 2005AbstractThe detection during solvolysis of competing signature reactions such as the racemization of a chiral substrate, or the scrambling of oxygen isotopes at the leaving group serves as evidence for a stepwise mechanism that proceeds through a reversibly formed ion‐pair intermediate.
Yutaka, Tsuji, John P, Richard
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Solvolysis of 3, 4-dialkyl sydnones
Journal of Pharmaceutical Sciences, 1967The kinetics of solvolysis of various dialkyl sydnones: 3- tert -butyl-4-methyl, 3- n -propyl-4-ethyl, 3-ethyl-4-methyl, 3-isopropyl-4-ethyl, 3- n -propyl-4-methyl, and 3- n -propyl-4- n -butyl sydnone, have been studied spectrophotometrically as a function of HCl and NaOH concentrations, pH, and temperature. The reactivity on acid-catalyzed solvolysis
E R, Garrett, P J, Mehta
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THE ACTIVATION PROCESS IN SOLVOLYSIS
Canadian Journal of Chemistry, 1964The structural nature of water is a major factor in determining the solvent isotope effect and the apparent heat capacity of activation for solvolysis. The consequences of this assumption are examined for the SN2 mechanism in terms of solvation changes at the transition state and the probable make-up of the activation energy.
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The Solvolysis of Tetrabenzylpyrophosphate
Journal of the American Chemical Society, 1959Gerald O. Dudek, F. H. Westheimer
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