Gas-phase enthalpies of adduct formation: dimethylamine-chloroform and ethyl acetate-boron trifluoride

1968 ◽  
Vol 7 (8) ◽  
pp. 1484-1488 ◽  
Author(s):  
Lawrence J. Sacks ◽  
Russell S. Drago ◽  
Darrell P. Eyman
Keyword(s):  
Ethyl Acetate ◽  
Gas Phase ◽  
Boron Trifluoride ◽  
Adduct Formation

Reesterification of ethyl acetate by propanol catalysed by glycidyl methacrylate copolymers containing sulphonic acid groups

1981 ◽  
Vol 46 (8) ◽  
pp. 1941-1946 ◽  
Author(s):  
Karel Setínek
Keyword(s):  
Liquid Phase ◽  
Ethyl Acetate ◽  
Kinetic Study ◽  
Gas Phase ◽  
Nonlinear Regression ◽  
Kinetic Data ◽  
Glycidyl Methacrylate ◽  
Kinetic Equations ◽  
Methacrylate Copolymers ◽  
Styrene Divinylbenzene

A series of differently crosslinked macroporous 2,3-epoxypropyl methacrylate-ethylenedimethacrylate copolymers with chemically bonded propylsulphonic acid groups were used as catalysts for the kinetic study of reesterification of ethyl acetate by n-propanol in the liquid phase at 52 °C and in the gas phase at 90 °C. Analysis of kinetic data by the method of nonlinear regression for a series of equations of the Langmuir-Hinshelwood type showed that kinetic equations which describe best the course of the reaction are the same as for the earlier studied sulphonated macroporous styrene-divinylbenzene copolymers. Compared types of catalysts differ, however, in the dependence of their activity on the degree of crosslinking of the copolymer used.

ChemInform Abstract: EFFECTS OF POLAR β-SUBSTITUENTS IN THE GAS-PHASE PYROLYSIS OF ETHYL ACETATE ESTERS

1980 ◽  
Vol 11 (33) ◽  
Author(s):  
G. CHUCHANI ◽  
I. MARTIN ◽  
A. J. A. HERNANDEZ ◽  
A. ROTINOV ◽  
G. FRAILE ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
Gas Phase ◽  
Acetate Esters

Site of gas-phase ethyl ion attachment

1986 ◽  
Vol 64 (6) ◽  
pp. 1051-1053 ◽  
Author(s):  
Alex. G. Harrison
Keyword(s):  
Ethyl Acetate ◽  
Gas Phase ◽  
Isotope Effect ◽  
Ethyl Benzoate ◽  
Carboxyl Group ◽  
Weakly Bound ◽  
Relative Loss ◽  
Ion Attachment

The [C2D5]+ species forms an adduct in the gas phase with ethyl acetate, ethylbenzene, and p-ethyltoluene, which subsequently unimolecularly eliminates C2H4 and C2D4 in approximately a 2:1 ratio. These results indicate that the adduct is not a weakly bound ion–molecule complex but a bonded species in which the C2D5 group has become equivalent to the C2H5 group present in the molecule; the preference for elimination of C2H4 is due to an isotope effect. From observations of the relative loss of C2H4 and C2D4 from [C2D5]+ adducts with other molecules containing a C2H5 group, it is concluded that the [C2D5]+ species attaches to the carboxyl group in ethyl benzoate, primarily to the ring in substituted phenetoles and in ethylphenols, primarily to the nitrogen in ethylpyridines, and primarily to the ring for N-ethyl- and p-ethyl-aniline.

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