Sodium Carbonate → 5-(4-Fluorophenyl)-6-[4-(methylthio)phenyl]-1,3-benzodioxole

HRID 1598841Notes

Reaction equation

HRID 1598841 reaction equation
Br[C:2]1[C:10](Br)=[CH:9][C:5]2[O:6][CH2:7][O:8][C:4]=2[CH:3]=1.[F:12][C:13]1[CH:18]=[CH:17][C:16](B(O)O)=[CH:15][CH:14]=1.[CH3:22][S:23][C:24]1[CH:29]=[CH:28][C:27](B(O)O)=[CH:26][CH:25]=1.C([O-])([O-])=O.[Na+].[Na+]>C1(C)C=CC=CC=1.C(O)C.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[F:12][C:13]1[CH:18]=[CH:17][C:16]([C:2]2[C:10]([C:27]3[CH:28]=[CH:29][C:24]([S:23][CH3:22])=[CH:25][CH:26]=3)=[CH:9][C:5]3[O:6][CH2:7][O:8][C:4]=3[CH:3]=2)=[CH:15][CH:14]=1

Participants

8

Reactant 4

HCID 10340Sodium CarbonateHCID 2258145,6-Dibromo-1,3-dioxaindaneHCID 2856454-Fluorophenylboronic acidHCID 27339594-(Methylthio)phenylboronic acid

Product 1

HCID 108308475-(4-Fluorophenyl)-6-[4-(methylthio)phenyl]-1,3-benzodioxoleYield 142.6%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 702EthanolSolventHCID 1140TolueneSolvent

Procedure

Under nitrogen, 1 g of Pd(PPh3)4 was added to a stirred solution of 4 g (14.3 mmol) of 5,6-dibromo-1,3-benzodioxole (Lancaster), 2.4 g (17.2 mmol) of 4-fluorophenyl boronic acid, and 2.87 g (17.2 mmol) of 4-methylthiophenylboronic acid (Example 1, Step 2) in 70 mL of toluene, 40 mL of ethanol, and 30 mL of 2M Na2CO3. After vigorous stirring at reflux overnight, the solvent was removed in vacuo. The residue was dissolved in ethyl acetate, washed with water, and dried over Na2 SO4. Concentration in vacuo gave 6.9 g of 5-(4-fluorophenyl)-6-[4-(methylthio)phenyl]-1,3-benzodioxole as a semi-solid which was used without further purification.

Workup

  1. temperatureat reflux overnight
  2. customthe solvent was removed in vacuo
  3. dissolutionThe residue was dissolved in ethyl acetate
  4. washwashed with water
  5. customdried over Na2 SO4
  6. concentrationConcentration in vacuo

Sources & evidence

ORD record
ord-692ea6792de14155887aaeb3fdd82e1d
Source dataset
uspto-grants-1998_04
Patent number
US05739166

Reaction notes

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