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Observation of the Neophyl Radical Rearrangement by Electron Spin Resonance Spectroscopy
Author(s) -
Hamilton Edwin J.,
Fischer Hanns
Publication year - 1973
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19730560222
Subject(s) - chemistry , photodissociation , electron paramagnetic resonance , spectroscopy , photochemistry , activation energy , methyl radical , nuclear magnetic resonance spectroscopy , spin (aerodynamics) , radical , resonance (particle physics) , nuclear magnetic resonance , stereochemistry , atomic physics , organic chemistry , physics , quantum mechanics , aerospace engineering , engineering
The rearrangement of the 2‐methyl‐2‐phenylpropyl (or neophyl) radical 1 to the 1‐methyl‐1‐benzylethyl radical 2 is observed by ESR. spectroscopy during photolysis of di‐ t ‐butylperoxide in t ‐butylbenzene at 270–360 K. The energy of activation of the rearrangement is determined to be (43 ± 9) kJ mol −1 .