Isopropyl iodide → 4-(4-Isopropoxyphenyl)cyclohexanone

HRID 1825260Notes

Reaction equation

HRID 1825260 reaction equation
[OH:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]2[CH2:13][CH2:12][C:11](=[O:14])[CH2:10][CH2:9]2)=[CH:4][CH:3]=1.C([O-])([O-])=O.[K+].[K+].I[CH:22]([CH3:24])[CH3:23]>CN(C=O)C>[CH:22]([O:1][C:2]1[CH:3]=[CH:4][C:5]([CH:8]2[CH2:9][CH2:10][C:11](=[O:14])[CH2:12][CH2:13]2)=[CH:6][CH:7]=1)([CH3:24])[CH3:23]

Participants

5

Reactant 3

HCID 6362Isopropyl iodideHCID 11430Potassium CarbonateHCID 45989164-(4'-Hydroxyphenyl)cyclohexanone

Product 1

HCID 221452644-(4-Isopropoxyphenyl)cyclohexanoneYield 95.6%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
100 °C

Procedure

A solution of 4-(4-hydroxyphenyl)cyclohexanone (6.0 g, 31.6 mmol) in DMF (90 mL) was treated with K2CO3 (21 g, 158 mmol, 5 equiv) and 2-iodopropane (15 mL, 26.8 g, 158 mmol, 5 equiv.). The reaction was heated at 100° C. overnight. After the solvent was removed, the residue was treated with H2O and extracted with EtOAc. The organic extracts were combined and washed with brine, dried over Na2SO4 and concentrated in vacuum to give the spectroscopically pure 4-(4-isopropoxyphenyl)cyclohexanone (7.02 g, 95%). 1H NMR (CDCl3): 7.14 (dt, 2H), 6.84 (dt, 2H), 4.3 (septet, 1H), 2.97 (tt, 1H), 2.46-2.52 (m, 4H), 2.16-2.24 (m, 2H), 1.83-1.98 (m, 2H) and 1.33 (d, 6H). Step 2:

Workup

  1. customAfter the solvent was removed
  2. additionthe residue was treated with H2O
  3. extractionextracted with EtOAc
  4. washwashed with brine
  5. dry with materialdried over Na2SO4
  6. concentrationconcentrated in vacuum

Sources & evidence

ORD record
ord-9eab0b8cc30e4447a1d7eec9f6221cf5
Source dataset
uspto-grants-2006_05
Patent number
US07045591B2

Reaction notes

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