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Thermally Initiated Free‐Radical Chain Addition of Alkanes to Alkynes, II. Kinetics of the Addition of Cyclohexane to Phenylethyne under Supercritical Fluid Conditions
Author(s) -
Metzger Jürgen O.,
Bangert Fritz
Publication year - 1994
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19941270416
Subject(s) - chemistry , cyclohexane , supercritical fluid , kinetics , reaction rate constant , photochemistry , chain reaction , radical , atmospheric temperature range , addition reaction , organic chemistry , catalysis , thermodynamics , physics , quantum mechanics
The kinetics of the addition of cyclohexane ( 2 ) to phenylethyne ( 1 ) proceeding via 2‐cyclohexyl‐1‐phenylethenyl radical ( 3 ) to give 1‐cyclohexyl‐2‐phenylethene ( 4 ) was investigated in the temperature range from 260 to 340°C. The radical chain is initiated by a bimolecular reaction of cyclohexane with phenylethyne to give a cyclohexyl radical and a 1‐phenylethenyl radical. The physical state of the reaction mixture was varied from liquid to supercritical and to gasphase conditions. No effect on the reaction rate constant near the critical point was observed.