ChemicalBook--->CAS DataBase List--->2979-19-3

2979-19-3

2979-19-3 Structure

2979-19-3 Structure
IdentificationBack Directory
[Name]

3,3-Dimethylcyclohexanone
[CAS]

2979-19-3
[Synonyms]

P120
3,3-dimethylcyclohexanoe
3,3-DIMETHYLCYCLOHEXANONE
3,3-dimethylcyclohexan-1-one
Cyclohexanone, 3,3-dimethyl-
3,3-Dimethylcyclohexanone>
3,3-DiMethylcyclohexanone 90%
3,3-Dimethylcyclohexane-1-one
[EINECS(EC#)]

628-905-1
[Molecular Formula]

C8H14O
[MDL Number]

MFCD00040178
[MOL File]

2979-19-3.mol
[Molecular Weight]

126.2
Questions And AnswerBack Directory
[Synthesis]

1. Preparation of Compounds 1 and 3

Synthesis of 2979-19-3_1

10.0 g of compound 2 was added to 100 mL of isopropanol and 0.5 g of 5% Pd/C. The reaction was carried out at 65 °C and 2 MPa hydrogen pressure for 48 hours. Pd/C was removed by filtration, and the reaction solution was concentrated to obtain a mixture of compounds 1 and 3 (approximately 17:1 on GC). These were not separated and were directly used for subsequent reactions.

2. Preparation of Compound 1

Synthesis of 2979-19-3_2

The mixture obtained above was added to 100 mL of dichloromethane and 100 mL of water. 14.7 g of sodium bromide and 9 g of sodium bicarbonate were added. The mixture was stirred and cooled to 0~10℃, 0.2 g of TEMPO was added, and 101 g of 5% sodium hypochlorite aqueous solution was added dropwise. GC analysis showed that compound 3 was completely converted to compound 1. After separation, washing with water, and concentration, crude compound 1 was obtained with a GC purity of up to 95%. Distillation yielded compound 1 (3,3-dimethylcyclohexanone).

Chemical PropertiesBack Directory
[Melting point ]

9.25°C (estimate)
[Boiling point ]

175°C
[density ]

0.909 g/mL at 25 °C(lit.)
[refractive index ]

n20/D 1.449(lit.)
[Fp ]

175°C
[storage temp. ]

Inert atmosphere,Room Temperature
[form ]

clear liquid
[color ]

Colorless to Light yellow
[Water Solubility ]

Insoluble in water.
[InChI]

InChI=1S/C8H14O/c1-8(2)5-3-4-7(9)6-8/h3-6H2,1-2H3
[InChIKey]

ZVJQBBYAVPAFLX-UHFFFAOYSA-N
[SMILES]

C1(=O)CCCC(C)(C)C1
[EPA Substance Registry System]

Cyclohexanone, 3,3-dimethyl-(2979-19-3)
Safety DataBack Directory
[Symbol(GHS) ]

Flame (GHS02)Corrosion (GHS05)
GHS02,GHS05
[Signal word ]

Danger
[Hazard statements ]

H226-H318
[Precautionary statements ]

P280-P305+P351+P338
[Hazard Codes ]

Xi
[Risk Statements ]

41-36-10
[Safety Statements ]

26-38
[RIDADR ]

UN 1993 3/PG 3
[WGK Germany ]

3
[TSCA ]

Yes
[REACH Registrations]

Active
[HazardClass ]

3
[HazardClass ]

IRRITANT
[PackingGroup ]

III
[HS Code ]

29142990
[Storage Class]

3 - Flammable liquids
[Hazard Classifications]

Eye Dam. 1
Flam. Liq. 3
Hazard InformationBack Directory
[Uses]

An interest in the boll weevil sex attractants prompted an investigation into alternative syntheses of the starting material, 3, 3-dimethylcyclohexanone.
[Synthesis Reference(s)]

The Journal of Organic Chemistry, 40, p. 3619, 1975 DOI: 10.1021/jo00912a040
Spectrum DetailBack Directory
[Spectrum Detail]

3,3-Dimethylcyclohexanone(2979-19-3)1HNMR
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