amine
/'æmain/
Definition
- Noun:
- A compound derived from ammonia by replacing hydrogen atoms with univalent hydrocarbon radicals: An "amine" is an organic compound and functional group that contains a basic nitrogen atom with a lone pair. It is formally derived from ammonia (NH₃) by replacing one or more hydrogen atoms with alkyl or aryl groups.
Examples of Usage
- Noun:
- Methylamine is a simple amine with a strong odor.
- Many pharmaceuticals, such as antihistamines, are complex amines.
- The presence of an amine group often makes a molecule basic.
Advanced Usage
- Primary, Secondary, and Tertiary Amines: These classifications depend on how many hydrogen atoms in the ammonia molecule have been replaced by organic groups.
- A primary amine, like ethylamine, has one organic group replacing a hydrogen.
- A tertiary amine, like trimethylamine, has three organic groups.
- Amine as a Base: In chemical reactions, amines often act as bases, accepting a proton.
- The amine group in the molecule can be protonated in acidic conditions.
Variants and Related Words
- Amino (adj): A prefix used to indicate the presence of an amine group, often in biochemistry.
- Amino acids are the building blocks of proteins.
- Ammonia (n): The inorganic compound (NH₃) from which amines are formally derived.
Synonyms
- None in common usage: In technical chemistry, "amine" is the precise term. In very general contexts, one might refer to it as a nitrogenous base or organic base, but these are not direct synonyms.
Related Phrases (Phrasal Verbs)
- Not applicable: "Amine" is a technical noun and does not form standard phrasal verbs.
Related Idioms
- Not applicable: There are no common idioms using the word "amine."
Noun
-
a compound derived from ammonia by replacing hydrogen atoms by univalent hydrocarbon radicals
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