Molecular rearrangements in homogeneous gas-phase elimination reactions. Pyrolysis kinetics of alkyl methanesulphonates

1993 ◽  
Vol 6 (2) ◽  
pp. 85-94 ◽  
Author(s):  
Gabriel Chuchani ◽  
Ignacio Martin ◽  
Rosa M. Dominguez ◽  
Alexandra Rotinov ◽  
Sara Pekerarm ◽  
...  
Keyword(s):  
Gas Phase ◽  
Pyrolysis Kinetics ◽  
Molecular Rearrangements ◽  
Elimination Reactions ◽  
Kinetics Of ◽  
Phase Elimination

Gas-phase pyrolysis of thiopheneacetic acids, thienylethanols, and related compounds — protophilicity of ring π-electrons and relative acidities of hydrogen-bond donors of hydroxyl groups

2002 ◽  
Vol 80 (5) ◽  
pp. 499-503 ◽  
Author(s):  
Ibtehal A Al-Juwaiser ◽  
Nouria A Al-Awadi ◽  
Osman ME El-Dusouqui
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Bond ◽  
Gas Phase ◽  
Kinetic Data ◽  
Reaction Pathway ◽  
Hydroxyl Groups ◽  
Pyrolysis Kinetics ◽  
Elimination Reactions ◽  
Related Compounds ◽  
Phase Elimination

Based on kinetic data of thermal gas-phase elimination reactions, the following Arrhenius log A (s–1) and Ea (kJ mol–1) values, respectively, are obtained: 10.76 and 153.5 for 3-thiopheneacetic acid (1), 10.08 and 149.4 for 2-thiopheneacetic acid (2), 12.04 and 207.1 for 2-(3-thienyl)ethanol (3), 11.55 and 203.3 for 2-(2-thienyl)ethanol (4), 10.91 and 123.4 for 2-thiopheneglyoxylic acid (5), 11.05 and 223.8 for 1-(2-thienyl)propan-1-one (6), and 10.33 and 149.8 for 3-thiophenemalonic acid (7). The products of these pyrolytic reactions were either carbon dioxide or formaldehyde in addition to methylthiophene or thiophenecarboxaldehyde. Both positional and molecular reactivities of the substrates and related compounds are compared, and the results are rationalized on the basis of a reaction pathway involving a concerted six-membered transition state.Key words: thiophenes, gas-phase, pyrolysis, kinetics, mechanism.

Theoretical study of the mechanisms for the homogenous gas-phase elimination kinetics of some 2-hydroxynitroalkanes

2006 ◽  
Vol 19 (12) ◽  
pp. 836-840 ◽  
Author(s):  
Rafael Añez ◽  
Rodolfo Izquierdo ◽  
Alba Vidal ◽  
Tania Cordova ◽  
Aníbal Sierraalta ◽  
...  
Keyword(s):  
Gas Phase ◽  
Theoretical Study ◽  
Elimination Kinetics ◽  
Kinetics Of ◽  
Phase Elimination

ChemInform Abstract: Mechanism of Base-Induced Gas-Phase Elimination Reactions of Cyclic Thioethers

ChemInform ◽  
1988 ◽  
Vol 19 (29) ◽  
Author(s):  
L. J. DE KONING ◽  
N. M. M. NIBBERING
Keyword(s):  
Gas Phase ◽  
Elimination Reactions ◽  
Phase Elimination

Gas-phase elimination kinetics of selected aliphatic α,β-unsaturated aldehydes catalyzed by hydrogen chloride

2015 ◽  
Vol 28 (4) ◽  
pp. 261-265 ◽  
Author(s):  
Libia L. Julio ◽  
José R. Mora ◽  
Alexis Maldonado ◽  
Gabriel Chuchani
Keyword(s):  
Gas Phase ◽  
Hydrogen Chloride ◽  
Elimination Kinetics ◽  
Unsaturated Aldehydes ◽  
Kinetics Of ◽  
Phase Elimination

Gas-phase kinetics of elimination reactions of pentane-2,4-dione derivatives

1995 ◽  
Vol 27 (5) ◽  
pp. 517-523 ◽  
Author(s):  
Nouria A. Al-Awadi ◽  
Mohamed H. El-Nagdi ◽  
Tommy Mathew
Keyword(s):  
Gas Phase ◽  
Gas Phase Kinetics ◽  
Elimination Reactions ◽  
Kinetics Of

Gas Phase Elimination Kinetics of Methyl Mandelate: Experimental and DFT Studies

2009 ◽  
Vol 113 (44) ◽  
pp. 12157-12162 ◽  
Author(s):  
Alexandra Rotinov ◽  
Luz Escalante ◽  
Beatriz Ramirez ◽  
Desiree Pereira ◽  
Tania Córdova ◽  
...  
Keyword(s):  
Gas Phase ◽  
Dft Studies ◽  
Elimination Kinetics ◽  
Kinetics Of ◽  
Phase Elimination

Kinetics of the homogeneous, unimolecular elimination reactions of ethyl oxamate, ethylN,N-dimethyloxamate and ethyl oxanilate in the gas phase

2005 ◽  
Vol 18 (6) ◽  
pp. 539-545 ◽  
Author(s):  
Esker V. Chacin ◽  
María Tosta ◽  
Armando Herize ◽  
Rosa M. Domínguez ◽  
Ysaias Alvarado ◽  
...  
Keyword(s):  
Gas Phase ◽  
Elimination Reactions ◽  
Kinetics Of
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