Here is the requested information on "allyl":
1. **Parts of Speech:** noun, adjective
2. **Definitions:**
- (noun) a colorless, flammable liquid with a pungent odor, used in the manufacture of resins, plastics, and other chemicals
- (adjective) of or relating to allyl or its derivatives
3. **Pronunciations:**
- US: /ˈælil/
- UK: /ˈalɪl/
4. **Origin and Usage:** The term "allyl" was first used in 1857, derived from the word "allylene" which was coined in 1844. The word "allyl" refers to a group of compounds that contain the allyl functional group, which is a carbon-carbon double bond and a single bond to a terminal methyl group. Allyl compounds are commonly used in the manufacture of resins, plastics, and other chemicals due to their reactivity and versatility.
5. **Synonyms:** None
6. **Related Words:**
- alloy
- allys
- allay
- alley
- allee
7. **Example Sentences:**
- The chemist synthesized a new allyl compound in the lab.
- Allyl derivatives are commonly used in the production of synthetic rubbers.
- The allyl group in the molecule gives it its characteristic reactivity.