Rate constants for reaction of a fluorous tin hydride reagent with primary alkyl radicals
โ Scribed by John H. Horner; Felix N. Martinez; Martin Newcomb; Dennis P. Curran
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- French
- Weight
- 224 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
Rate constants for 6-exo cyclization of the 7,7-diphenyl-6-heptenyl radical (3) in benzotrifluoride (BTF, PhCF3) were determined by laser flash photolysis, and radical clock 3 was used in competition kinetic studies for determination of rate constants of reactions of the fluorous tin hydride reagent tris(2-(perfluorohexyl)ethyl)tin hydride with primary alkyl radicals.
๐ SIMILAR VOLUMES
Relative rate constants for the reactions of hydroxyl radicals with a series of alkyl substituted olefins were measured by competitive reactions between pairs of olefins a t 298 r 2 K and 1 atmospheric pressure. Hydroxyl radicals were produced by the photolysis of H,O, with 254-nm irradiation. The o
An electron paramagnetic resonance (EPR) technique was used to show that simple alkyl radicals readily abstract hydrogen from l,4-cyclohexadiene. Rate constants for the reaction were ca. 104-105 M-' s-' at 300 K and activation energies 5-7 kcal mol-'. For the stabilized radicals, ally1 and benzyl, t