Dimethylformamide → HCID 10654815, compound

HRID 278045Notes

Reaction equation

HRID 278045 reaction equation
C([Li])CCC.[CH3:6][C:7]1[C:12]2[CH:13]=[CH:14][O:15][C:11]=2[C:10]([CH3:16])=[CH:9][CH:8]=1.CN(C)[CH:19]=[O:20].C(OCC)(=O)C>O1CCCC1>[CH3:6][C:7]1[C:12]2[CH:13]=[C:14]([CH:19]=[O:20])[O:15][C:11]=2[C:10]([CH3:16])=[CH:9][CH:8]=1

Participants

6

Reactant 4

HCID 6228DimethylformamideHCID 8857Ethyl AcetateHCID 331094,7-DimethylbenzofuranHCID 178418339Butyllithium

Product 1

HCID 10654815HCID 10654815, compound

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

Under nitrogen atmosphere at −35° C., 18.4 ml of n-butyllithium (1.56M hexane solution) was added to 50 ml of a solution of 3.5 g of 4,7-dimethylbenzofuran in anhydrous tetrahydrofuran, and the resulting mixture was stirred for 15 minutes, followed by the dropwise addition thereto of 5.6 ml of N,N-dimethylformamide. The temperature of the resulting mixture was raised to room temperature, followed by the addition of ethyl acetate. The organic layer was washed with brine, dried over anhydrous magnesium sulfate, and the solvent was evaporated. The resulting crude crystal was washed with n-hexane to give 2.3 g of the title compound as a pale-yellow solid.

Workup

  1. additionfollowed by the dropwise addition
  2. washThe organic layer was washed with brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. customthe solvent was evaporated
  5. washThe resulting crude crystal was washed with n-hexane

Sources & evidence

ORD record
ord-7ed3eb184dc94b7aa299d604751db337
Source dataset
uspto-grants-2002_03
Patent number
US06358995B1

Reaction notes

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