(redirected from Allylic hydrogen)
Also found in: Medical, Encyclopedia.


(Chemistry) chem
a. oxidation by exposure to atmospheric oxygen
b. oxidation that will only occur when another oxidation reaction is taking place in the same system
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ɔˌtɒk sɪˈdeɪ ʃən)

the oxidation of a compound by exposure to air.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
Mentioned in ?
References in periodicals archive ?
We were attracted to substrate that can be susceptible to an allylic hydrogen abstraction to form an allylic radical based on our compounds that containing an allylic N- or S-substituent.
As abstraction may be the dominant mechanism, there is a higher allylic hydrogen concentration in isoprene (7 vs.
Pharmacological studies have demonstrated that andrographolide supports conceptual hydrogen transfer, which would be thermodynamically favoured for its allylic hydrogen on carbon C-11.
It has been suggested that the loss in scorch safety is primarily attributed to the elimination of degradative chain transfer reactions as the groups of Type I coagents quickly react with the alkoxy radical and do not possess an allylic hydrogen. Type II coagents, however, can still delay the onset of effective crosslink formation by participating in competing, non-productive reactions (ref.