benzyl group
Definition
Noun: A benzyl group is the univalent radical, C₆H₅CH₂–, derived from toluene by removal of a hydrogen atom from the methyl group. It is a common functional group in organic chemistry.
Usage
The term "benzyl group" is used specifically in organic chemistry to describe this molecular fragment when it is part of a larger compound. It is distinct from a "phenyl group" (C₆H₅–).
Examples
- The molecule contains a benzyl group attached to the oxygen atom.
- Benzyl protection is a common strategy in synthetic chemistry.
- The reaction involves the substitution of the benzyl group.
Advanced Usage
- "Benzyl position": Refers to the carbon atom of the methylene (CH₂) group within the benzyl unit, which is often the site of chemical reactions.
- "Benzyl-derived": Used to describe compounds that originate from or contain the benzyl group.
Variants and Related Words
- Benzyl (adj.): Pertaining to or containing a benzyl group. Often used attributively (e.g., benzyl alcohol, benzyl chloride).
- Benzyloxy (adj.): The group C₆H₅CH₂O–, which is a benzyl group linked through an oxygen atom.
Synonyms
- Phenylmethyl group: A systematic name for the benzyl group.
- (Note: "Phenyl group" is not a synonym; it refers to C₆H₅–, which lacks the CH₂ unit.)
Related Phrases
- Benzyl protecting group: A common use of the benzyl group to temporarily shield reactive functional groups like alcohols or amines during chemical synthesis.
Noun
-
the univalent radical derived from toluene
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