Aliphatic carbon-centered radicals

Reactions such as these are of interest in themselves. Beyond that, one can use the pulse radiolysis experiment as a preparative technique for other species. Thus, the reactions of numerous aliphatic, carbon-centered radicals have been evaluated.22 If one employs a reasonably high concentration of solute, say 0.1-1 M CH3OH, the formation of CH2OH is complete within the electron pulse. Following that, reactions such as the following can be studied ... 

Ross. A. B. Neta, P. Rate Constants for Reactions of Aliphatic Carbon-Centered Radicals in Aqueous Solution U.S. Natl. Bur. of Standards. U.S. Government Printing Office Washington, DC, 1982 NSRDS-NBS70 pp 1-96. 

Reaction of Aliphatic Carbon-Centered Radicals with Transition Metal Complexes in Aqueous Solutions... 

The organic radicals are produced essentially by one of the following methods Aliphatic carbon-centered radicals are formed mainly from saturated aliphatic compounds via hydrogen atom abstraction by OH and H radicals ( H radicals react with solutes to produce the same radicals as OH radicals, but the rate constants are usually considerably smaller (7)) ... 

Applying the same idea to the activation of an aliphatic C-H bond would be a major goal, but is not as simple as one may hope. Direct irradiation of the precursor can not be contemplated because simple aliphatic derivatives do not absorb at convenient wavelengths (i.e. those at which efficiently emitting lamps are available), but only in the extreme UV. At any rate, even when the way to reach the excited state is found, more than one chemical (fragmentation) path is usually available, making the process less clean that it may be desired. However, the use of photocatalysts may help, particularly for reactions via aliphatic carbon-centered radicals. 

Neta, R, Grodkowski, J., Ross, A. B. 1996. Rate constants for reactions of aliphatic carbon-centered radicals in aqueous solutions. Journal of Physical Chemistry Reference Data 25 709-1050. 

Ros Ross, A.B., Neta, P. Rate Constants of Aliphatic Carbon Centered Radicals in Aqueous Solution. ... 

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