Ethynyl methyl vinyl carbinol Chemical Properties

Melting point:

25°C (estimate)

Boiling point:

63-65 °C/100 mmHg (lit.)

Density 

0.89 g/mL at 25 °C (lit.)

refractive index 

n20/D 1.446(lit.)

Flash point:

90 °F

pka

12.53±0.29(Predicted)

form 

clear liquid

color 

Colorless to Light yellow to Light orange

Specific Gravity

0.88

CAS DataBase Reference

3230-69-1(CAS DataBase Reference)

NIST Chemistry Reference

3-Methyl-1-penten-4-yn-3-ol(3230-69-1)

Safety Information

Hazard Codes 

Xn

Risk Statements 

22-36/37/38

Safety Statements 

36-37/39-26

RIDADR 

UN 1760 8/PG 2

WGK Germany 

1

RTECS 

SB4950000

HazardClass 

3

PackingGroup 

III

HS Code 

29052900

Toxicity

mouse,LD50,oral,1350mg/kg (1350mg/kg),Journal of Pharmacology and Experimental Therapeutics. Vol. 107, Pg. 459, 1953.

MSDS

• Language:English Provider:Ethynyl methyl vinyl carbinol
• Language:English Provider:ACROS
• Language:English Provider:SigmaAldrich

Ethynyl methyl vinyl carbinol Usage And Synthesis

Chemical Properties

reddish to yellow-brown liquid

Uses

3-Methyl-1-penten-4-yn-3-ol is used as a building block in organic synthesis including that of primary allenic amines and alcohols and also of pluraflavin A “Aglycon” which is cytotoxic.

General Description

3-Methyl-1-penten-4-yn-3-ol is an acetylenic alcohol. It reacts with ruthenium vinyl carbene to form a ten-membered η²-olefin coordinated ruthenacycle. The efficiency of different palladium catalysts for the hydrogenation of 3-methyl-1-penten-4-yn-3-ol under continuous-flow liquid-phase conditions has been evaluated. It undergoes allylic rearrangement to form cis and trans isomers of 3-methyl-2-penten-4-yn-l-ol.

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