84175-26-8Relevant academic research and scientific papers
Absolute Rate Constants for Decarbonylation of Phenylacetyl and Related Radicals
Turro, Nicholas J.,Gould, Ian R.,Baretz, Bruce H.
, p. 531 - 532 (1983)
The rate constants and Arrhenius parameters for decarbonylation of phenylacetyl (C6H5CH2CO), phenylmethylacetyl (C6H5CHCH3CO), and phenyldimethylacetyl radicals in isooctane have been determined by laser flash photolysis.The variation of the rate constant for decarbonylation follows the pattern expected from radical stabilities, but the activation energies do not.It is proposed that previously unrecognized conformational restrictions may be significant in determinig decarbonylation rates.
Primary Processes in the Type I Photocleavage of Dibenzyl Ketones. A Pulsed Laser and Photochemically Induced Dynamic Nuclear Polarization Study
Gould, Ian R.,Baretz, Bruce H.,Turro, Nicholas J.
, p. 925 - 929 (2007/10/02)
The primary homolytic α-cleavage, and subsequent decarbonylation of the intermediate phenacyl radicals, have been studied for the type I photoreaction of a series of dibenzyl ketones, using the techiques of pulsed laser photolysis and photochemically induced dynamic nuclear polarization (photo-CIDNP).Evidence for selective primary cleavage to produce the most stable radical pairs is obtained for unsymmetrical ketones.The absolute rate constants and activation parameters for the decarboxylations are obtained, and the relationships between these and the stabilities of the product radicals is discussed.
