3-Methyl-2-penten-4-yn-1-ol
- CAS NO.：105-29-3
- Empirical Formula: C6H8O
- Molecular Weight: 96.13
- MDL number: MFCD00042661
- EINECS: 203-284-6
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-12-31 14:38:37
What is 3-Methyl-2-penten-4-yn-1-ol?
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.
The Uses of 3-Methyl-2-penten-4-yn-1-ol
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.
Properties of 3-Methyl-2-penten-4-yn-1-ol
| 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 information for 3-Methyl-2-penten-4-yn-1-ol
Computed Descriptors for 3-Methyl-2-penten-4-yn-1-ol
New Products
Cyclopentane-1,2-dione 8-hydroxy-7-methoxy-2,6-dimethylisoquinolinium iodide Isopropyl amine Hydrochloride 4-Chlorobutyronitrile (3S)-1-(tert-Butoxycarbonyl)-3-pyrrolidinecarboxylic acid Amino-4-methoxyben-zeneacetic acid 4-isothiocyanato-2-(trifluoroMethyl)benzonitrile 3-Aminophenylacetic acid 2-Bromo-5-iodopyridine Rifaximin EP Impurity-G N-Nitroso hydroxy Cetrizine EP Impurity-A Noradrenaline EP Impurity D/Noradrenaline Methyl Ether Cetirizine EP Impurity A/Cetirizine CBHP Impurity Lantanoprost rc B Clidinium Bromide Impurity 4-(5-amino-1-methyl-1h-benzoimidazol-2-yl)-butyric acid isopropyl ester. 2-(3-amino propyl amino) ethyl bromide tri sodium thio phosphate 2,2'-(5-methyl-1,3-phenylene)-di(2-Methylpropionitrile) 2,2'-(5-Bromomethyl-1,3-phenylene)-di(2-Methylpropionitrile) L-phenylalanine, N-(pyrazinyl carbonyl) methyl ester 3,4 Diethoxy Benzylcyanide 3,4 Dimethoxy Benzylcyanide valeronitrileRelated products of tetrahydrofuran
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