1-Bromo-2-methylpropane → HCID 54578033, compound

HRID 2171176Notes

Reaction equation

HRID 2171176 reaction equation
[F:1][CH:2]([F:23])[O:3][C:4]1[C:5]([OH:22])=[C:6]([C:12]2[CH:13]=[C:14]3[C:18](=[CH:19][CH:20]=2)[C:17](=[O:21])[O:16][CH2:15]3)[CH:7]=[CH:8][C:9]=1[O:10][CH3:11].C(=O)([O-])[O-].[K+].[K+].[CH2:30](Br)[CH:31]([CH3:33])[CH3:32]>C(#N)C>[F:23][CH:2]([F:1])[O:3][C:4]1[C:5]([O:22][CH2:30][CH:31]([CH3:33])[CH3:32])=[C:6]([C:12]2[CH:13]=[C:14]3[C:18](=[CH:19][CH:20]=2)[C:17](=[O:21])[O:16][CH2:15]3)[CH:7]=[CH:8][C:9]=1[O:10][CH3:11]

Participants

5

Reactant 3

HCID 65551-Bromo-2-methylpropaneHCID 11430Potassium CarbonateHCID 67466666HCID 67466666, compound

Product 1

HCID 54578033HCID 54578033, compoundYield 21.5%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Conditions

Temperature
70 °C

Procedure

To a stirring solution of 5-(3-(difluoromethoxy)-2-hydroxy-4-methoxyphenyl)isobenzofuran-1(3H)-one (80 mg, 0.246 mmol) in acetonitrile (10 mL) was added potassium carbonate (102 mg, 0.738 mmol) and isobutylbromide (67 mg, 0.492 mmol) and the resultant reaction mixture was heated to 70° C. for 16 h. The reaction mixture was cooled to RT, filtered through celite and the filtrate was concentrated under reduced pressure. The obtained residue was purified by column chromatography (silica gel, 0-30% ethyl acetate in pet ether) to afford the title compound as a solid (20 mg, 21.4%).

Workup

  1. customthe resultant reaction mixture
  2. temperatureThe reaction mixture was cooled to RT
  3. filtrationfiltered through celite
  4. concentrationthe filtrate was concentrated under reduced pressure
  5. customThe obtained residue was purified by column chromatography (silica gel, 0-30% ethyl acetate in pet ether)

Sources & evidence

ORD record
ord-af3b7b036b3041ecbbe67d550d2f7fe1
Source dataset
uspto-grants-2015_06
Patent number
US09051290B2

Reaction notes

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