13144-88-2

Basic information

• Product Name: 1-(2,4,4,5,5-pentamethyl-1-cyclopenten-1-yl)ethan-1-one
• Synonyms: 1-(2,4,4,5,5-pentamethyl-1-cyclopenten-1-yl)ethan-1-one;1-(2,4,4,5,5-pentamethyl-1-cyclopenten-1-yl)-ethanon;2-Acetyl-1,3,3,4,4-pentamethyl-1-cyclopentene;1-(2,4,4,5,5-Pentamethyl-1-cyclopenten-1-yl)ethanone;2-Acetyl-1,3,3,4,4-pentamethylcyclopentene;Einecs 236-080-0;Ethanone, 1-(2,4,4,5,5-pentamethyl-1-cyclopenten-1-yl)-;1-(2,4,4,5,5-pentamethylcyclopenten-1-yl)ethanone
• CAS NO: 13144-88-2
• Molecular Formula: C₁₂H₂₀O
• Molecular Weight: 180.2866
• EINECS: 236-080-0
• Mol File: 13144-88-2.mol
• Article Data: 5

Chemical Properties

• Boiling Point: 232.8°Cat760mmHg
• Flash Point: 86.7°C
• Appearance: /
• Density: 0.874g/cm³
• Vapor Pressure: 0.0578mmHg at 25°C
• Refractive Index: 1.448
• CAS DataBase Reference: 1-(2,4,4,5,5-pentamethyl-1-cyclopenten-1-yl)ethan-1-one(CAS DataBase Reference)
• NIST Chemistry Reference: 1-(2,4,4,5,5-pentamethyl-1-cyclopenten-1-yl)ethan-1-one(13144-88-2)
• EPA Substance Registry System: 1-(2,4,4,5,5-pentamethyl-1-cyclopenten-1-yl)ethan-1-one(13144-88-2)

Safety Data

• Hazardous Substances Data: 13144-88-2(Hazardous Substances Data)

Usage

Uses

1,3,3,4,4-Pentamethyl-2-acetyl-1-cyclopentene is an ingredient that is found in fragrance materials.

InChI:InChI=1/C12H20O/c1-8-7-11(3,4)12(5,6)10(8)9(2)13/h7H2,1-6H3

Upstream product

• 141-79-7 4-methyl-pent-3-en-2-one 
• 706-87-6 2,3,3,5-tetramethyl-2-(2-methyl-propenyl)-2,3-dihydro-furan 
• 64-19-7 acetic acid 

Relevant articles and documents

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Ketone precursors for organoleptic compounds

The invention discloses ketones of formula I: wherein, Y is an optionally substituted alkyl, cycloalkyl, or cycloalkylalkyl, wherein each alkyl group is straight or branched and each alkyl and cycloalkyl group is saturated or unsaturated; R1is hydrogen or a C1-6alkyl group that is substituted, saturated or unsaturated, straight or branched; A is a chromophoric substituted aromatic ring or ring system; n is an integer; and with the proviso that formula I is not 2-ethoxy-1-phenyl-ethanone. These compositions are useful for the delivery of organoleptic compounds, especially of flavors, fragrances, masking agents and antimicrobial compounds.

REDUCTIVE COUPLING OF α,β-ENONES PROMOTED BY Mg AND Mg-MgBr2

α,β-enones able to have a s-cis conformation can be reduced by Mg (turnings 99.8percent) or more efficiently by Mg(99.8percent)-MgBr2, 10 Et2O in dimers (resulting from the formation of a bond between the Cβ carbon atoms) and dihydroketones.