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Treasures from the Free Radical Renaissance Period - Miscellaneous hexenyl radical kinetic data

Beckwith, Athelstan (Athel); Schiesser, Carl


Rate constant data and Arrhenius parameters have been determined for a series of substituted hexenyl radicals of differing electronic and steric demand. Electron-withdrawing groups (CF3, CO2Et) directly attached to the radical centre slighly accelerate 5-exo ring-closure (kcis + ktrans ∼ 2.1 × 105 s-1 at 25°) relative to donating groups (OMe; 1.6 × 105 s-1 at 25°). Sterically demanding groups (tert-Bu), as expected, slow the cyclization process (1 × 105 s-1). These observations are consistent...[Show more]

CollectionsANU Research Publications
Date published: 2011
Type: Journal article
Source: Organic and Biomolecular Chemistry
DOI: 10.1039/c0ob00708k


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