Product Name

  • Name

    ISOMENTHONE

  • EINECS 207-727-4
  • CAS No. 491-07-6
  • Article Data74
  • CAS DataBase
  • Density 0.881g/cm3
  • Solubility
  • Melting Point -35 °C
  • Formula C10H18 O
  • Boiling Point 205°Cat760mmHg
  • Molecular Weight 372.244
  • Flash Point 72.8°C
  • Transport Information
  • Appearance
  • Safety A skin irritant. When heated to decomposition it emits acrid smoke and fumes.
  • Risk Codes
  • Molecular Structure Molecular Structure of 491-07-6 (ISOMENTHONE)
  • Hazard Symbols
  • Synonyms Cyclohexanone,5-methyl-2-(1-methylethyl)-, cis-; p-Menthan-3-one, cis- (8CI); (?à)-Isomenthone; Isomenthone;cis-Menthone; cis-p-Menthan-3-one; cis-p-Menthone; dl-Isomenthone; a-Isomenthone
  • PSA 17.07000
  • LogP 2.64770

Synthetic route

Conditions
ConditionsYield
With 2,2'-azobis(isobutyronitrile); tri-n-butyl-tin hydride In toluene at 110℃; for 0.333333h;A 12%
B n/a
C n/a
With 2,2'-azobis(isobutyronitrile); tri-n-butyl-tin hydride In toluene at 110℃; for 0.333333h; Product distribution; mode of addition of TBTH/AIBN or hydroquinone;A 12%
B n/a
C n/a
With 2,2'-azobis(isobutyronitrile); tri-n-butyl-tin hydride In toluene at 110℃; for 0.333333h; Yield given. Yields of byproduct given;
With 2,2'-azobis(isobutyronitrile); tri-n-butyl-tin hydride In toluene at 110℃; for 1.5h; Yield given. Yields of byproduct given;
Conditions
ConditionsYield
With 2,2'-azobis(isobutyronitrile); tri-n-butyl-tin hydride In toluene at 110℃; for 0.333333h; Product distribution; mode of addition of TBTH/AIBN or Galvinoxyl;A 10%
B n/a
C n/a
tetrachloromethane
56-23-5

tetrachloromethane

5-hydroxy-3,6-diisopropyl-9-methyl-2,3,5,6,7,8,9,10-octahydro-1H-5,9-methano-benzocycloocten-4-one
15775-51-6

5-hydroxy-3,6-diisopropyl-9-methyl-2,3,5,6,7,8,9,10-octahydro-1H-5,9-methano-benzocycloocten-4-one

isomenthone
491-07-6

isomenthone

Conditions
ConditionsYield
unter vermindertem Druck; substance of mp: 110 degree (α-dipiperitone);
unter vermindertem Druck; substance of mp: 94 degree;
thymol
89-83-8

thymol

isomenthone
491-07-6

isomenthone

B

Menthone
10458-14-7

Menthone

Conditions
ConditionsYield
With hydrogen; nickel at 160℃; dl-menthone;
neoisomenthol
3623-53-8

neoisomenthol

isomenthone
491-07-6

isomenthone

Conditions
ConditionsYield
With chromium(VI) oxide; sulfuric acid; water
Conditions
ConditionsYield
With sodium In methanol for 2h; Ambient temperature;
Conditions
ConditionsYield
With diphenylsilane; zinc(II) chloride; tetrakis(triphenylphosphine) palladium(0) In chloroform for 3h; Ambient temperature; Yield given. Yields of byproduct given;
With hydrogen; silica gel; copper In toluene at 140℃; under 7600 Torr; for 4h; Yield given. Yields of byproduct given. Title compound not separated from byproducts;
With hydrogen; tetra-(n-butyl)ammonium iodide In water at 110℃; under 15001.5 Torr; for 24h; Overall yield = 71 %; chemoselective reaction;A n/a
B n/a

A

(Z)-p-menthan-4-ol
3239-03-0

(Z)-p-menthan-4-ol

B

(Z)-4-isopropyl-1-methylcyclohexan-1-ol
3901-93-7

(Z)-4-isopropyl-1-methylcyclohexan-1-ol

C

cis p-menthanol
3901-95-9

cis p-menthanol

isomenthone
491-07-6

isomenthone

Conditions
ConditionsYield
Yield given. Multistep reaction. Further byproducts given. Yields of byproduct given;
Conditions
ConditionsYield
Yield given. Multistep reaction. Further byproducts given. Yields of byproduct given;
Conditions
ConditionsYield
Yield given. Multistep reaction. Further byproducts given. Yields of byproduct given;
Conditions
ConditionsYield
Yield given. Multistep reaction. Further byproducts given. Yields of byproduct given;
Conditions
ConditionsYield
With 2,2'-azobis(isobutyronitrile); tri-n-butyl-tin hydride In benzene at 80℃; for 0.5h; Yield given. Yields of byproduct given. Title compound not separated from byproducts;
Conditions
ConditionsYield
With 2,2'-azobis(isobutyronitrile); tri-n-butyl-tin hydride In benzene for 2.5h; Heating; Yield given. Yields of byproduct given. Title compound not separated from byproducts;
hydrogen

hydrogen

palladium

palladium

isomenthone
491-07-6

isomenthone

nickel pumice stone

nickel pumice stone

A

thymol
89-83-8

thymol

isomenthone
491-07-6

isomenthone

Conditions
ConditionsYield
at 180℃; under 100 Torr; Hydrogenation; dl-piperitone;
nickel

nickel

A

thymol
89-83-8

thymol

isomenthone
491-07-6

isomenthone

Conditions
ConditionsYield
at 140℃; under 13680 Torr; im Eisenautoklaven.Hydrogenation; dl-piperitone;
palladium

palladium

A

thymol
89-83-8

thymol

isomenthone
491-07-6

isomenthone

Conditions
ConditionsYield
Hydrogenation; dl-piperitone;
(+-)-erythro(?)-2-isopropyl-5-methyl-heptanedioic acid

(+-)-erythro(?)-2-isopropyl-5-methyl-heptanedioic acid

isomenthone
491-07-6

isomenthone

Conditions
ConditionsYield
With barium dihydroxide at 310 - 330℃;
alcoholic alkaline solution

alcoholic alkaline solution

isomenthone
491-07-6

isomenthone

neoisomenthol
3623-53-8

neoisomenthol

chromic acid mixture

chromic acid mixture

isomenthone
491-07-6

isomenthone

isomenthol
3623-52-7

isomenthol

chromic acid mixture

chromic acid mixture

isomenthone
491-07-6

isomenthone

d-piperitone

d-piperitone

isomenthone
491-07-6

isomenthone

Conditions
ConditionsYield
With palladium at 30℃; Hydrogenation;
2-iodo-propane
75-30-9

2-iodo-propane

4-methyl-l-formyl-cyclohexanone-(2)

4-methyl-l-formyl-cyclohexanone-(2)

isomenthone
491-07-6

isomenthone

Conditions
ConditionsYield
With sodium ethanolate im geschlossenen Gefaess und Destillieren des Reaktionsprodukts mit Natronlauge;
Conditions
ConditionsYield
With sodium dithionite; sodium hydrogencarbonate; Aliquat R In water; benzene at 80℃; for 2h; Yield given. Yields of byproduct given;
Conditions
ConditionsYield
With sodium dithionite; sodium hydrogencarbonate; Aliquat R In water; benzene at 80℃; for 2.5h; Yield given. Yields of byproduct given;
hydrogenchloride
7647-01-0

hydrogenchloride

p-menthan-3-one semicarbazone
1686-42-6, 16892-34-5

p-menthan-3-one semicarbazone

isomenthone
491-07-6

isomenthone

B

hydrazine carboxamide
4426-72-6, 51433-48-8

hydrazine carboxamide

Conditions
ConditionsYield
dl-isomenthone-α semicarbazone;
Conditions
ConditionsYield
With 2,2'-azobis(isobutyronitrile); 2,3,3,4,4,5-hexamethyl-2-hexanethiol In toluene for 21h; Heating;
isomenthol
3623-52-7

isomenthol

isomenthone
491-07-6

isomenthone

Conditions
ConditionsYield
With potassium dichromate; sulfuric acid In diethyl ether
chloroform
67-66-3

chloroform

isomenthone
491-07-6

isomenthone

2-(chloromethylene)-1-isopropyl-4-methylcyclohexane

2-(chloromethylene)-1-isopropyl-4-methylcyclohexane

Conditions
ConditionsYield
With titanium tetrachloride; magnesium In tetrahydrofuran at 10 - 25℃; for 1h;78%
isomenthone
491-07-6

isomenthone

mercury(II) diacetate
1600-27-7

mercury(II) diacetate

(1RS,2SR,4SR)-2-acetoxy-p-menthan-3-one-(2,4-dinitro-phenylhydrazone)

(1RS,2SR,4SR)-2-acetoxy-p-menthan-3-one-(2,4-dinitro-phenylhydrazone)

Conditions
ConditionsYield
Behandeln des Reaktionsprodukts mit <2,4-Dinitro-phenyl>-hydrazin;
isomenthone
491-07-6

isomenthone

ammonium formate
540-69-2

ammonium formate

isomenthone
491-07-6

isomenthone

cis-1-isopropyl-4-methyl-cyclohexane
6069-98-3

cis-1-isopropyl-4-methyl-cyclohexane

Conditions
ConditionsYield
With sulfuric acid Electrolysis;
isomenthone
491-07-6

isomenthone

(+/-)-2,3-bis-(4-nitro-benzoyloxy)-trans-p-menth-2-ene

(+/-)-2,3-bis-(4-nitro-benzoyloxy)-trans-p-menth-2-ene

Conditions
ConditionsYield
With acetic acid; mercury(II) oxide Erwaermen des Reaktionsprodukts mit wss. KOH und anschliessend mit 4-Nitro-benzoylchlorid;
isomenthone
491-07-6

isomenthone

(+/-)-(3R,6R)-3-isopropyl-6-methyl-1-cyclohexene
1124-26-1, 2230-85-5, 5056-00-8, 5113-93-9, 5256-65-5, 31658-04-5

(+/-)-(3R,6R)-3-isopropyl-6-methyl-1-cyclohexene

Conditions
ConditionsYield
(i) TsNHNH2, H2SO4, (ii) MeLi; Multistep reaction;
Conditions
ConditionsYield
With 3-chloro-benzenecarboperoxoic acid In dichloromethane
isomenthone
491-07-6

isomenthone

(2R*,3R*,6S*)-2-hydroxy-3-methyl-6-isopropylcyclohexanone

(2R*,3R*,6S*)-2-hydroxy-3-methyl-6-isopropylcyclohexanone

(2S*,3R*,6S*)-2-hydroxy-3-methyl-6-isopropylcyclohexanone

(2S*,3R*,6S*)-2-hydroxy-3-methyl-6-isopropylcyclohexanone

Conditions
ConditionsYield
Yield given. Multistep reaction;
Multistep reaction;
hydrogenchloride
7647-01-0

hydrogenchloride

isomenthone
491-07-6

isomenthone

benzaldehyde
100-52-7

benzaldehyde

2-<α-chloro-benzyl>-p-menthanon-(3) of melting point 119-120 degree

2-<α-chloro-benzyl>-p-menthanon-(3) of melting point 119-120 degree

hydrogenchloride
7647-01-0

hydrogenchloride

isomenthone
491-07-6

isomenthone

benzaldehyde
100-52-7

benzaldehyde

A

2-<α-chloro-benzyl>-p-menthanon-(3) of melting point 119-120 degree

2-<α-chloro-benzyl>-p-menthanon-(3) of melting point 119-120 degree

B

2-<α-chloro-benzyl>-p-menthanon-(3) of melting point 129-130 degree

2-<α-chloro-benzyl>-p-menthanon-(3) of melting point 129-130 degree

sulfuric acid
7664-93-9

sulfuric acid

isomenthone
491-07-6

isomenthone

cis-1-isopropyl-4-methyl-cyclohexane
6069-98-3

cis-1-isopropyl-4-methyl-cyclohexane

Conditions
ConditionsYield
Electrolysis;

Isomenthone Chemical Properties

IUPAC Name: (2R,5R)-2-Isopropyl-5-methyl-cyclohexan-1-one
CAS: 491-07-6
EINECS: 207-727-4
Following is the Molecular Structure of Isomenthone (491-07-6):

SMILES: O=C1C[C@H](C)CC[C@@H]1C(C)C
InChI: InChI=1/C10H18O/c1-7(2)9-5-4-8(3)6-10(9)11/h7-9H,4-6H2,1-3H3/t8-,9-/m1/s1
InChIKey: NFLGAXVYCFJBMK-RKDXNWHRBG
Std.InChI: InChI=1S/C10H18O/c1-7(2)9-5-4-8(3)6-10(9)11/h7-9H,4-6H2,1-3H3/t8-,9-/m1/s1
Std.InChIKey: NFLGAXVYCFJBMK-RKDXNWHRSA-N
Molecular Formula: C10H18O
Molecular Weight: 154.25
Boiling Point: 205℃ at 760 mmHg
Flash Point: 72.8℃
Molar Volume: 175cm3
Density: 0.881g/cm3
Index of Refraction: 1.442
Molar Refractivity: 46.37cm3
Surface Tension: 27.2dyne/cm
Polarizability: 18.38 10-24cm3
Enthalpy of Vaporization: 44.12kJ/mol
Vapour Pressure: 0.256mmHg at 25℃

Isomenthone Uses

 Isomenthone (491-07-6) can be used as a food spice by GB 2760--1996.

Isomenthone Toxicity Data With Reference

1.    

skn-rbt 500 mg/24H MLD

    FCTXAV    Food and Cosmetics Toxicology. 14 (1976),315.

Isomenthone Consensus Reports

Reported in EPA TSCA Inventory.

Isomenthone Safety Profile

This chemical is a skin irritant.

Isomenthone Specification

 Isomenthone (491-07-6),which also can be called for (±)-cis-p-Menthan-3-one ; (z)-Cyclohexanon ; (z)-p-Menthan-3-on ; 5-Methyl-2-(1-methylethyl)-,cis-Cyclohexanone ; 5-Methyl-2-(1-methylethyl)cyclohexanone ; cis-Cyclohexanon ; cis-Menthone ; cis-p-Menthan-3-one . Isomenthone (491-07-6) is a colorless slightly like oily liquid and it's insoluble in water, soluble in Ethanol and oil.When heated to decomposition it emits acrid smoke and fumes.

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