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Related to allylic: Allylic substitution


The univalent, unsaturated organic group C3H5.

[Latin allium, garlic; see allium + -yl (so called because it was first obtained from garlic).]

al·lyl′ic (ə-lĭl′ĭk) adj.


characteristic of or involving an allyl
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Adj.1.allylic - of or pertaining to the allyl radical
chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
References in periodicals archive ?
Addition of vinylmagnesium bromide (2) to 4 gave 5, which was treated with 47% hydrobromic acid to furnish allylic bromide 6.
Some allylic compounds for commercial oxygen scavengers may include hydroxyl-terminated polybutadiene (Amosorb technology from Amoco), 3-hexenedioic acid [21], or n-octenyl succinic anhydride [22] to promote the allylic oxidation of oxygen ingress for the extended shelf-life.
NCS and the DMSO/SO3*pyridine complex were used as the chlorinating agent and oxidant, respectively, sand activated alcohols, such as allylic alcohol, propargylic alcohol, and aromatic alcohols, were used as starting compounds as well as alkanols [30].
As antioxidant compounds donate a proton to the DPPH radical, greater weighting may be given to double bond positions that increase the availability of allylic protons (due to the weaker C-H bond at allyl groups) (Behrendorff et al.
A is an electrophilic fragment that is highly susceptible to free radical oxidation owing to its allylic hydrogen (Porter et al.
When the epoxy resins were cationically polymerized in conjunction with a thiol-ene system that included either acrylates or allylic compounds with a multifunctional thiol, it was found that due to the basic nature of the formed polythioethers, these species interrupted the cationic polymerization of the epoxy resin [28].
Some researchers have suggested that allicin exerts direct antioxidant effects by preventing the formation of free radicals [32-34], the lipid peroxidation through scavenge OH molecules, and the chain-carrying peroxyl radicals of the substrates by transferring its allylic hydrogen to the oxidized substrate [35, 36].
The conjugation went to complete conversion based on the complete disappearance of the allylic [sup.
As a result of the polymeric nature of the plant oil-based polymers, the number of bis-allylic protons, allylic protons, and double bonds per molecule is much higher than that of the parent oil.
Historically, quantification has been performed with GC-MS after solvolysis and hydrolysis of the conjugate groups (2, 8, 11); however, the presence of the 7[alpha]-hydroxyl group in these atypical bile acids generates an allylic structure in the B-ring of the steroid nucleus that is highly labile and readily degrades under acidic conditions and, in the presence of methanol, yields a series of methoxylated derivatives as artifacts (2, 23).
There are three major groups of phytochemicals: the polyphenols which can be subcategorized as the flavonoids, phenolic acids and other non-flavonoid polyphenols; the terpenoids, which can be subcategorized as the carotenoids and non-carotenoid terpenoids; and the thiols, which includes the glucosinolates, allylic sulfides and non-sulphur containing indoles (Table.