3-Methyl-2-penten-4-yn-1-ol
- Product Name
- 3-Methyl-2-penten-4-yn-1-ol
- CAS No.
- 105-29-3
- Chemical Name
- 3-Methyl-2-penten-4-yn-1-ol
- Synonyms
- 1-Pentol;3-Methylpenten-2-in-4-ol-1;3-methyl-2-penten-4-yn-1-o;3-methylpent-2-en-4-yn-1-ol;3-Methyl-2-penten-4-yn-1-ol;2-Penten-4-yn-1-ol,3-methyl-;1-Hydroxy-3-methyl-2-penten-4-yne
- CBNumber
- CB5851933
- Molecular Formula
- C6H8O
- Formula Weight
- 96.13
- MOL File
- 105-29-3.mol
3-Methyl-2-penten-4-yn-1-ol Property
- Melting point:
- 25°C
- Boiling point:
- 144.66°C (rough estimate)
- Density
- 0.9253 (estimate)
- refractive index
- 1.4460 (estimate)
- pka
- 14.22±0.10(Predicted)
- EPA Substance Registry System
- 2-Penten-4-yn-1-ol, 3-methyl- (105-29-3)
Safety
- RIDADR
- 2705
- HazardClass
- 8
- PackingGroup
- II
3-Methyl-2-penten-4-yn-1-ol Chemical Properties,Usage,Production
Description
3-Methyl-2-penten-4-yn-1-ol, also known as C6 alcohol or 3-methylpent-2-en-4-yn-1-ol, is a derivative of methyl vinyl ketone and acetylene. (Z)-3-Methyl-2-penten-4-yn-1-ol is a pharmaceutical intermediate for the production of vitamin A. Its stereoisomer, (Z)-3-methyl-2-penten-4-yn-1-ol, is also a useful intermediate for the manufacture of astaxanthin, zeaxanthin and further carotenoids.
Chemical Properties
3-Methyl-2-penten-4-yn-1-ol has cis and trans isomers. E type: oily liquid, boiling point 165-167℃, relative density 0.922, refractive index 1.4850, flash point 65℃; Z type: oily liquid, boiling point 89-92℃/4kPa, relative density 0.897, refractive index 1.4930, flash point 75 °C. Both isomers are easy to polymerize, and they will explode when heated to above 120°C in a sealed tube.
Uses
Used as intermediate of vitamin A acetate.
Synthesis
3-Methyl-2-penten-4-yn-1-ol is synthesized by allyl rearrangement fo methyl vinyl ethynyl methanol at 80°C under moderate acid.
3-Methyl-2-penten-4-yn-1-ol Preparation Products And Raw materials
Raw materials
Preparation Products
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