The ritter reaction of poly(acrylonitrile) with tert.-butyl alcohol

1980 ◽  
Vol 16 (11) ◽  
pp. 1075-1078
Author(s):  
V. Janout ◽  
P. Čefelín
1980 ◽  
Vol 45 (7) ◽  
pp. 1928-1936 ◽  
Author(s):  
Václav Janout ◽  
Pavel Čefelín

The Ritter reaction of oligomeric models of poly(acrylonitrile) with tert-butyl alcohol in tetramethylene sulphone leads to the respective N-tert-butylamides and proceeds via the second-order kinetics. The rate constants increase only little on passing from the monomeric to the trimeric model. The decrease in the activation enthalpy ΔH is almost compensated for by the decrease in the activation entropy parameter. No effect of the neighbouring functional group on the reaction kinetics could be observed. A new conformational equilibrium is established during the reaction.


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 ◽  
...  

2008 ◽  
Vol 9 (10) ◽  
pp. 1982-1986 ◽  
Author(s):  
Yingli Wang ◽  
Lei Xu ◽  
Zhengxi Yu ◽  
Xinzhi Zhang ◽  
Zhongmin Liu

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