benzyl radical
Definition
- Noun:
- The univalent radical derived from toluene: A chemical group or fragment with the formula C₆H₅CH₂–, formed by removing one hydrogen atom from the methyl group of toluene. It is a common substituent in organic chemistry.
Usage
- The term "benzyl radical" is used specifically in the context of organic chemistry to describe this particular molecular structure. It is a fundamental concept for naming and understanding benzyl-containing compounds.
Examples
- Noun:
- Benzyl bromide is an alkylating agent where the benzyl radical is attached to a bromine atom.
- The reactivity of the compound is increased by the presence of the benzyl radical.
Advanced Usage
- In reaction mechanisms: The benzyl radical can be an intermediate in free-radical reactions due to the stability provided by resonance with the aromatic ring.
- The benzyl radical intermediate was detected during the photolysis reaction.
Variants and Related Words
- Benzyl group (n): Often used synonymously with "benzyl radical" to refer to the C₆H₅CH₂– substituent when it is not a free radical but a part of a larger, stable molecule.
- Benzyl alcohol contains a benzyl group bonded to a hydroxyl group.
- Benzyl cation: The positively charged ion (C₆H₅CH₂⁺).
- Benzyl anion: The negatively charged ion (C₆H₅CH₂⁻).
Synonyms
- Phenylmethyl radical: A systematic name indicating a phenyl group (C₆H₅–) attached to a methylene group (–CH₂–).
- Bn (abbreviation): Commonly used in chemical shorthand and structural formulas to represent the benzyl group/radical.
Notes
- It is crucial to distinguish the "benzyl radical" (C₆H₅CH₂·) from the "phenyl radical" (C₆H₅·), which lacks the methylene (–CH₂–) bridge.
- In non-technical contexts, this term is rarely encountered.
Noun
-
the univalent radical derived from toluene
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