allylic
- Adjective:
- Relating to or containing the allyl group: In organic chemistry, "allylic" describes a position, carbon atom, or functional group that is adjacent to a carbon-carbon double bond in a molecule. Specifically, it refers to the carbon atom or substituent attached to the carbon atom next to the double-bonded carbons in an allyl group (CH₂=CH-CH₂-).
- Adjective:
- The reaction occurs at the allylic carbon, making it highly reactive.
- Allylic bromination is a common method for introducing a bromine atom at the allylic position.
- The stability of the allylic radical contributes to the reaction's selectivity.
"Allylic strain": A type of steric strain in organic molecules that can influence conformation and reactivity, often discussed in the context of cyclic systems or reaction transition states.
- The product's stereochemistry is controlled by minimizing allylic strain in the transition state.
"Allylic rearrangement": A type of organic reaction where a substituent moves from one allylic position to another, often via an intermediate such as an allylic cation or radical.
- The observed product mixture is consistent with an allylic rearrangement during the reaction mechanism.
Allyl (noun): The univalent radical CH₂=CH-CH₂-, which is the parent group for allylic compounds.
- Allyl chloride is a simple organic compound containing the allyl group.
Homoallylic (adjective): Describing a position that is separated from a carbon-carbon double bond by one methylene (-CH₂-) group. It is related but distinct from the allylic position.
- The homoallylic alcohol was synthesized using a different catalytic approach.
- Vinylmethyl-related (technical, rarely used): Pertaining to the CH₂=CH-CH₂- structure.
- Unsaturated adjacent (descriptive): Describing the position next to an alkene.
Allylic oxidation: A chemical reaction that introduces an oxygen-containing functional group (like a hydroxyl or carbonyl) at an allylic carbon.
- Selenium dioxide is a reagent commonly used for allylic oxidation.
Allylic halide: An organic halide (e.g., chloride, bromide) where the halogen atom is bonded to an allylic carbon.
- Allylic halides are excellent substrates for nucleophilic substitution reactions.
(This term is highly technical and specific to organic chemistry; it does not have idiomatic expressions in everyday language. Its usage is confined to scientific contexts.)
-
of or pertaining to the allyl radical
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