Proton-transfer reactions. II. Effects of internal return on reactivity difference between alkoxide-promoted eliminations in tert-butyl alcohol and ethyl alcohol

1981 ◽  
Vol 103 (18) ◽  
pp. 5423-5429 ◽  
Author(s):  
H. F. Koch ◽  
W. Tumas ◽  
R. Knoll
Keyword(s):  
Proton Transfer ◽  
Ethyl Alcohol ◽  
Butyl Alcohol ◽  
Transfer Reactions ◽  
Tert Butyl ◽  
Tert Butyl Alcohol ◽  
Proton Transfer Reactions

A 2-Azapentadienyl Carbanion: a Nonstereospecific Electrocyclization

1975 ◽  
Vol 53 (3) ◽  
pp. 355-365 ◽  
Author(s):  
D. H. Hunter ◽  
R. P. Steiner
Keyword(s):  
Proton Transfer ◽  
Transfer Reaction ◽  
Proton Transfer Reaction ◽  
Butyl Alcohol ◽  
Open Chain ◽  
Tert Butyl ◽  
Tert Butyl Alcohol ◽  
Cis And Trans ◽  
Protic Media

Treatment of 1,3,5-triphenyl-4-aza-1,3-pentadiene under selected basic conditions leads to either isomerization among the azapentadienes or to cyclization. Analysis of the products from reaction under aprotic conditions (LiTMP in THF) suggested that the open-chain delocalized carbanion exists in both the W and sickle forms. The open-chain anions were observed to electrocyclize in a nonstereospecific manner to produce a 1:1 mixture of cis- and trans-2,4,5-triphenyl-1-pyrrolines. Reaction in protic media (methanol and tert-butyl alcohol) produced a 1,5-proton transfer as well as cyclization. The details of the 1,5-proton transfer reaction were elucidated using methanol-O-d and the collapse preferences and intramolecularity in this medium were determined.

Thermodynamic and Kinetic Investigation of the Solvent Effect on the Oxidation of [Co(en)2SCH2COO]+ with S2O82- In Water-Methanol and Water-tert-Butyl Alcohol Mixtures

1993 ◽  
Vol 58 (5) ◽  
pp. 1001-1006 ◽  
Author(s):  
Oľga Vollárová ◽  
Ján Benko
Keyword(s):  
Transfer Functions ◽  
Activation Parameters ◽  
Butyl Alcohol ◽  
Oxidation Of Co ◽  
Kinetics Of Oxidation ◽  
Tert Butyl ◽  
Tert Butyl Alcohol ◽  
Alcohol Mixtures ◽  
Kinetics Of

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.

scholarly journals Impacts of Sn(II) doping on the Keggin heteropolyacid-catalyzed etherification of glycerol with tert-butyl alcohol

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