ChemInform Abstract: THE REACTION BETWEEN 2,2-DI(4-NITROPHENYL)1,1,1-TRIFLUOROETHANE AND TERT-BUTOXIDE ION IN TERT-BUTYL ALCOHOL SOLVENT

1981 ◽  
Vol 12 (1) ◽  
Author(s):  
A. JARCZEWSKI ◽  
K. T. LEFFEK
1980 ◽  
Vol 58 (18) ◽  
pp. 1979-1982 ◽  
Author(s):  
Arnold Jarczewski ◽  
Kenneth T. Leffek

The reaction between 2,2-di(4-nitrophenyl) 1,1,1-trifluoroethane and excess sodium tert-butoxide in tert-butyl alcohol takes place rapidly to yield first the olefin, by elimination of HF. This is followed by a slower addition of tert-butoxide to the olefin, which upon reaction with the solvent gives the tert-butyl ether as the final product. The blue anions involved in each of these reactions are observed.Rate constants, the primary deuterium kinetic isotope effects, and the activation parameters have been measured for the appearance of the initial blue colour and also for the formation of the olefin. It is concluded that the reaction proceeds by a reversible ElcB mechanism.


1994 ◽  
Vol 72 (5) ◽  
pp. 1370-1375 ◽  
Author(s):  
Emma Beatty ◽  
John Burgess ◽  
Marttand S. Patel

Solubilities are reported for aluminum, gallium, and indium tris-ligand complexes of the pyrones maltol and ethylmaltol and of a number of 4-pyridinones in water–methanol and water–tert-butyl alcohol solvent mixtures, at 298.2 K. Trends and patterns in transfer chemical potentials derived from these solubilities are discussed in terms of the dependence of solvation on the nature of the ligand, the metal, and the cosolvent.


1993 ◽  
Vol 58 (5) ◽  
pp. 1001-1006 ◽  
Author(s):  
Oľga Vollárová ◽  
Ján Benko

The kinetics of oxidation of [Co(en)2SCH2COO]+ with S2O82- was studied in water-methanol and water-tert-butyl alcohol mixtures. Changes in the reaction activation parameters ∆H≠ and ∆S≠ with varying concentration of the co-solvent depend on the kind of the latter, which points to a significant role of salvation effects. The solvation effect on the reaction is discussed based on a comparison of the transfer functions ∆Ht0, ∆St0 and ∆Gt0 for the initial and transition states with the changes in the activation parameters accompanying changes in the CO-solvent concentration. The transfer enthalpies of the reactant were obtained from calorimetric measurements.


2021 ◽  
pp. 116913
Author(s):  
Márcio José da Silva ◽  
Diego Morais Chaves ◽  
Sukarno Olavo ferreira ◽  
Rene Chagas da Silva ◽  
Jose Balena Gabriel Filho ◽  
...  

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