grignard reagent: meaning, definition, pronunciation and examples
C2 / Highly SpecializedFormal / Technical / Academic
Quick answer
What does “grignard reagent” mean?
An organomagnesium compound used in organic synthesis, typically with the formula RMgX, where R is an alkyl or aryl group and X is a halogen.
Audio
Pronunciation
Definition
Meaning and Definition
An organomagnesium compound used in organic synthesis, typically with the formula RMgX, where R is an alkyl or aryl group and X is a halogen.
A versatile class of reagents used to form carbon-carbon bonds, most notably in the Grignard reaction, a foundational method for creating alcohols from carbonyl compounds like aldehydes and ketones.
Dialectal Variation
British vs American Usage
Differences
No significant lexical or phonetic differences. The concept and terminology are identical in international scientific English.
Connotations
Neutral, purely technical. No regional connotations.
Frequency
Frequency is identical and confined to advanced chemistry contexts in both regions.
Grammar
How to Use “grignard reagent” in a Sentence
The Grignard reagent was added to the ketone.Synthesise a Grignard reagent from magnesium and an alkyl halide.The reaction requires an anhydrous Grignard reagent.Vocabulary
Collocations
Examples
Examples of “grignard reagent” in a Sentence
adjective
British English
- The Grignard reaction mechanism is well understood.
- Grignard chemistry is a key part of the syllabus.
American English
- The Grignard reaction mechanism is well understood.
- Grignard chemistry is a key part of the curriculum.
Usage
Meaning in Context
Business
Virtually never used.
Academic
Core term in advanced organic chemistry textbooks, research papers, and laboratory protocols.
Everyday
Never used in everyday conversation.
Technical
Essential terminology in chemical synthesis, pharmaceutical research, and industrial chemistry labs.
Vocabulary
Synonyms of “grignard reagent”
Neutral
Weak
Vocabulary
Antonyms of “grignard reagent”
Watch out
Common Mistakes When Using “grignard reagent”
- Mispronouncing it as /ˈɡrɪɡnɑːrd/ (hard 'g').
- Using it as a countable noun incorrectly (e.g., 'grignards').
- Forgetting that it is always capitalised 'Grignard'.
- Incorrectly assuming it can be used with protic solvents or water.
FAQ
Frequently Asked Questions
It was discovered by and named after the French chemist Victor Grignard in 1900, for which he won the Nobel Prize in Chemistry in 1912.
Grignard reagents are highly basic and nucleophilic. They react violently with protic solvents like water, alcohols, or acids, which would destroy the reagent by protonating it.
Their most common use is to form carbon-carbon bonds by adding to carbonyl groups (aldehydes, ketones, esters, etc.) to create alcohols. They can also react with epoxides, carbon dioxide, and other electrophiles.
Yes, always, because it is a proper noun derived from a surname. The standard form is 'Grignard reagent' or 'Grignard reaction'.
An organomagnesium compound used in organic synthesis, typically with the formula RMgX, where R is an alkyl or aryl group and X is a halogen.
Grignard reagent is usually formal / technical / academic in register.
Grignard reagent: in British English it is pronounced /ˈɡriːnjɑːr riˌeɪdʒənt/, and in American English it is pronounced /ɡriˈnjɑr riˌeɪdʒənt/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: 'GRIN hard' when you make a new bond. GRIgnard Reagents Install New carbon bonds.
Conceptual Metaphor
A CARBON NUCLEOPHILE DELIVERY SERVICE: The reagent acts as a carrier that delivers a carbon anion (the R group) to a target molecule (the electrophile).
Practice
Quiz
What is the primary role of a Grignard reagent in organic synthesis?