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HomeProduct name list3-Methyl-2-penten-4-yn-1-ol

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: 2024-03-13 14:36:30
3-Methyl-2-penten-4-yn-1-ol Structural

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

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