26533-38-0

Basic information

• Product Name: 3-Isopropenyl-6-methyl-5-hepten-2-one
• Synonyms: 3-Isopropenyl-6-methyl-5-hepten-2-one;β-Isopentenylmesityloxide
• CAS NO: 26533-38-0
• Molecular Formula: C₁₁H₁₈O
• Molecular Weight: 166.26
• Mol File: 26533-38-0.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 234.982°C at 760 mmHg
• Flash Point: 80.881°C
• Appearance: /
• Density: 0.849g/cm³
• Vapor Pressure: 0.051mmHg at 25°C
• Refractive Index: 1.448
• CAS DataBase Reference: 3-Isopropenyl-6-methyl-5-hepten-2-one(CAS DataBase Reference)
• NIST Chemistry Reference: 3-Isopropenyl-6-methyl-5-hepten-2-one(26533-38-0)
• EPA Substance Registry System: 3-Isopropenyl-6-methyl-5-hepten-2-one(26533-38-0)

Safety Data

• Hazardous Substances Data: 26533-38-0(Hazardous Substances Data)

Usage

InChI:InChI=1/C11H18O/c1-8(2)6-7-11(9(3)4)10(5)12/h6,11H,3,7H2,1-2,4-5H3

Upstream product

• 141-79-7 4-methyl-pent-3-en-2-one 
• 503-60-6 3,3-dimethyl-allyl chloride 
• 817-88-9 4,8-dimethyl-3,7-nonadien-2-one 
• 67-64-1 acetone 
• 112-03-8 trimethyloctadecylammonium chloride 

Relevant articles and documents

REACTION OF CARBONYL COMPOUNDS IN THE PRESENCE OF PHASE-TRANSFER CATALYSTS. 9. MECHANISM OF ALKYLATION OF ACETONE BY QUATERNARY AMMONIUM SALTS AND THEIR DECOMPOSITION UNDER CONDITIONS OF INTERFACIAL CATALYSIS

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Process for the production of unsaturated ketones

There is disclosed a process for preparing unsaturated ketones especially terpenoid ketones, by subjecting a substituted propargyl alcohol of formula (II) STR1 wherein R is a group containing 1 or 2 substituted or unsubstituted alkyl- or alkylene units containing 4 carbon atoms each to a thermal treatment sufficient to rearrange its structure in order to obtain structurally isomeric unsaturated ketones of formula I STR2 wherein one of the substituents X3 and X4 is hydrogen and the other and Z2 together form a bond. The process can be effected in the presence of an isomerization catalyst, which leads to high percentage of α.β,γ.δ-unsaturated ketones. The ketones of formula I are useful as perfumes and as intermediates for the production of terpenoid compounds.