Sodium Chloride → 3-[2-(2,3-Dihydro-2,2-dimethyl-3-oxo-5-furanyl)ethenyl]benzonitrile

HRID 2051271Notes

Reaction equation

HRID 2051271 reaction equation
[C:1]([C:3]1[CH:4]=[C:5]([CH:8]=[CH:9][CH:10]=1)[CH:6]=O)#[N:2].[CH3:11][C:12]1([CH3:19])[C:16](=[O:17])[CH:15]=[C:14]([CH3:18])[O:13]1.[OH-].[Na+].[Cl-].[Na+]>C(O)C>[CH3:11][C:12]1([CH3:19])[C:16](=[O:17])[CH:15]=[C:14]([CH:18]=[CH:6][C:5]2[CH:4]=[C:3]([CH:10]=[CH:9][CH:8]=2)[C:1]#[N:2])[O:13]1

Participants

6

Reactant 4

HCID 5234Sodium ChlorideHCID 14798Sodium HydroxideHCID 90670m-FormylbenzonitrileHCID 1370803(2H)-Furanone, 2,2,5-trimethyl-

Product 1

HCID 542713823-[2-(2,3-Dihydro-2,2-dimethyl-3-oxo-5-furanyl)ethenyl]benzonitrileYield 43%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A solution of 3-cyanobenzaldehyde (2.5 g, 19 mM) and 2,2,5-trimethyl-3(2H)-furanone (2.0 g, 15.9 mM) in ethanol (100 mL), was added 1N aqueous sodium hydroxide (1.6 mL, 1.6 mM). The reaction solution was stirred for one day at room temperature. After saturated aqueous sodium chloride (400 mL) was added, the aqueous layer was extracted with diethyl ether (3×100 mL). The combined ethereal extracts were washed with saturated aqueous sodium chloride (50 mL), dried over MgSO4, filtered and concentrated to give a yellow solid. The product was recrystallized from hexane-ethyl acetate to afford an analytically pure sample (1.5 g, 43% yield), m.p. 155°-157° C.

Workup

  1. extractionthe aqueous layer was extracted with diethyl ether (3×100 mL)
  2. washThe combined ethereal extracts were washed with saturated aqueous sodium chloride (50 mL)
  3. dry with materialdried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customto give a yellow solid
  7. customThe product was recrystallized from hexane-ethyl acetate
  8. customto afford an analytically pure sample (1.5 g, 43% yield), m.p. 155°-157° C.

Sources & evidence

ORD record
ord-c0c5245e6c5d42029a86f1c9a0cc3ccb
Source dataset
uspto-grants-1991_05
Patent number
US05017601

Reaction notes

Loading…