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Gas Phase Thermolysis of Allylphosphines, Kinetic Study by G. Martín; E. Ocando‐Mavarez; A. Osorio; M. Laya; M. Canestrari is a Chemistry article available to read on EtoBox.

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## Abstract Diallylphenyl, allylbenzylphenyl and allylmethylphenyl phosphines were pyrolized in a stirred‐flow reactor at 380–429°C/7‐20 torr, using toluene as carrier gas. The reaction products were propene, 1‐phospha‐1,3‐butadiene, 1‐phospha‐1,2‐diphenylethylene and 1‐phosphaethylene. The phospha‐alkenes formed evolve into cyclo addition products. The propene elimination reaction showed first‐order kinetics with rate coefficients following the Arrhenius equations: Diallylphenylphosphine: k(s^−1^) = 10^10.57 ± 0.31^ exp(‐143 ± 4 kJ/mol.RT) Allylbenzylphenylphosphine: k(s^−1^) = 10^9.71 ± 0.47^ exp(‐135 ± 6 kJ/mol.RT) Allylbenzylphenylphosphine: k(s^−1^) = 10^9.61 ± 0.61^ exp(‐144 ± 9 kJ/mol.RT) A six‐center cyclic transition state unimolecular reaction mechanism, consistent with the above Arrhenius parameters, is proposed for the propene elimination reaction.

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Author

G. Martín; E. Ocando‐Mavarez; A. Osorio; M. Laya; M. Canestrari

Publisher

John Wiley and Sons; Hindawi Limited; John Wiley & Sons Inc.; Wiley (ISSN 1042-7163)

Published

1992

Language

EN

Field

Chemistry (Physical Sciences)