allyl group: meaning, definition, pronunciation and examples
Very LowTechnical/Scientific
Quick answer
What does “allyl group” mean?
A specific organic chemical functional group with the formula –CH₂–CH=CH₂.
Audio
Pronunciation
Definition
Meaning and Definition
A specific organic chemical functional group with the formula –CH₂–CH=CH₂.
It refers to a hydrocarbon substituent derived from propylene, characterized by a double bond between two of its three carbons, making it reactive and important in chemical synthesis and polymer chemistry.
Dialectal Variation
British vs American Usage
Differences
No significant difference in technical meaning or usage.
Connotations
None beyond its strict chemical definition.
Frequency
Exclusively used in chemistry contexts in both regions.
Grammar
How to Use “allyl group” in a Sentence
The [compound] possesses an allyl group.The reaction targets the allyl group of the [molecule].Vocabulary
Collocations
Examples
Examples of “allyl group” in a Sentence
adjective
British English
- The allyl group substitution was confirmed by NMR.
- This is an allyl group derivative of benzene.
American English
- The molecule has an allyl group functionality.
- We identified an allyl group attachment on the ring.
Usage
Meaning in Context
Business
Not used.
Academic
Used in chemistry textbooks and research papers discussing organic synthesis, reaction mechanisms, or polymer science.
Everyday
Never used.
Technical
The primary domain. Used in lab reports, chemical patents, and specialized discussions of organic chemistry.
Vocabulary
Synonyms of “allyl group”
Strong
Neutral
Weak
Vocabulary
Antonyms of “allyl group”
Watch out
Common Mistakes When Using “allyl group”
- Misspelling as 'ally', 'alkyl', or 'allylic group' when referring specifically to the substituent.
- Confusing it with the 'vinyl group'.
FAQ
Frequently Asked Questions
An allyl group is –CH₂–CH=CH₂ (three carbons, double bond between the second and third), while a vinyl group is –CH=CH₂ (two carbons with a double bond).
Not exactly. 'Allyl' refers to the specific –CH₂–CH=CH₂ substituent. 'Allylic' is an adjective describing the position next to a carbon-carbon double bond in any system, not necessarily an allyl group itself.
It is a versatile building block in organic synthesis due to its reactivity, enabling many useful transformations like allylic substitution and polymerisation reactions.
Yes, allyl alcohol (CH₂=CHCH₂OH) and garlic's allicin are well-known molecules containing an allyl group.
A specific organic chemical functional group with the formula –CH₂–CH=CH₂.
Allyl group is usually technical/scientific in register.
Allyl group: in British English it is pronounced /ˈalɪl ɡruːp/, and in American English it is pronounced /ˈælɪl ɡrup/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think 'ALLyL' has ALL three carbons, but one is a double bond like an ALLiance between two of them.
Conceptual Metaphor
A reactive 'handle' or 'attachment point' on a molecule that can be easily grabbed and modified in chemical reactions.
Practice
Quiz
What is the defining structural feature of an allyl group?