67801-15-4

Basic information

• Product Name: 3-methyl-5-(2,2,3-trimethyl-3-cyclopenten-1-yl)pent-4-en-2-one
• Synonyms: 3-methyl-5-(2,2,3-trimethyl-3-cyclopenten-1-yl)pent-4-en-2-one;3-Methyl-5-(2,2,3-trimethyl-3-cyclopenten-1-yl)-4-penten-2-one;4-Penten-2-one, 3-methyl-5-(2,2,3-trimethyl-3-cyclopenten-1-yl)-;Einecs 267-135-7
• CAS NO: 67801-15-4
• Molecular Formula: C₁₄H₂₂O
• Molecular Weight: 206.32388
• EINECS: 267-135-7
• Mol File: 67801-15-4.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 279.3°C at 760 mmHg
• Flash Point: 100.8°C
• Appearance: /
• Density: 0.932g/cm³
• Vapor Pressure: 0.00405mmHg at 25°C
• Refractive Index: 1.511
• Water Solubility: 39mg/L at 25℃
• CAS DataBase Reference: 3-methyl-5-(2,2,3-trimethyl-3-cyclopenten-1-yl)pent-4-en-2-one(CAS DataBase Reference)
• NIST Chemistry Reference: 3-methyl-5-(2,2,3-trimethyl-3-cyclopenten-1-yl)pent-4-en-2-one(67801-15-4)
• EPA Substance Registry System: 3-methyl-5-(2,2,3-trimethyl-3-cyclopenten-1-yl)pent-4-en-2-one(67801-15-4)

Safety Data

• Hazardous Substances Data: 67801-15-4(Hazardous Substances Data)

Usage

Flammability and Explosibility

Nonflammable

InChI:InChI=1/C14H22O/c1-10(12(3)15)6-8-13-9-7-11(2)14(13,4)5/h6-8,10,13H,9H2,1-5H3/b8-6-

Upstream product

• 4501-58-0 campholenyc aldehyde 
• 78-93-3 butanone 
• 74-83-9 methyl bromide 
• 74-87-3 methylene chloride 

Downstream Products

• 67801-20-1 3-methyl-5-(2,2,3-trimethyl-3-cyclopenten-1-yl)-4-penten-2-ol 

Relevant articles and documents

Preparation of 3-methyl-5-(2,2,3-trimethyl-3-cyclopenten-1-yl)pent-4-en-2-ol

The invention provides a preparation method of 3-methyl-5-(2,2,3-trimethyl-3-cyclopenten-1-yl)-pent-4-en-2-ol. The preparation method comprises the following steps: firstly, converting a compound of astructure of a formula (III) shown in the description into a compound of a structure of a formula (IV) shown in the description, and further converting the compound of the structure of the formula (IV) into a compound of a structure of a formula (I) shown in the description. According to the preparation, the compound of the structure of the formula (III) is subjected to isomerization and methylation in a same reaction system to obtain the compound of the structure of the formula (IV), so that the obtained product is high in purity and high in yield, in addition, steps of reactions are simplified, and industrial production can be achieved.

Optical isomers of derivatives of campholenic aldehyde

The present invention relates to a mixture of the 4 diastereomers 1'S,2R,3S; 1'S,2S,3R; 1'S,2S,3S and 1'S,2R,3R of (E)-3-methyl-5-(2,2,3-trimethylcyclopent-3-en-1-yl)pent-4-en-2-ol, a mixture of the 4 diastereomers 1'R,2S,3R; 1'R,2R,3S; 1'R,2R,3R and 1'R,2S,3S of (E)-3-methyl-5-(2,2,3-trimethylcyclopent-3-en-1-yl)pent-4-en-2-ol and to (1'S,2S,3R)-(E)-3-methyl-5-(2,2,3-trimethylcyclopent-3-en-1-yl)pent-4-en-2-ol, (1'R,2S,3R)-(E)-3-methyl-5-(2,2,3-trimethylcyclopent-3-en-1-yl)pent-4-en-2-ol and to a process for the manufacture of these compounds or mixtures. Further, the invention is related to any isomer mixture of (E)-3-methyl-5-(2,2,3-trimethylcyclopent-3-en-1-yl)pent-4-en-2-ol enriched in one or both of the compounds or mixtures, especially to an odorant composition containing any isomer mixture of (E)-3-methyl-5-(2,2,3-trimethylcyclopent-3-en-1-yl)pent-4-en-2-ol enriched in one or both of the above compounds or mixtures, and to the use of any one of the compounds or mixtures as odorants.