Dimethyl malonate → Dimethyl-3-nitrobiphenyl-4-malonate

HRID 24462

Reaction equation

HRID 24462 reaction equation
[C:1]([O:8][CH3:9])(=[O:7])[CH2:2][C:3]([O:5][CH3:6])=[O:4].[H-].[Na+].F[C:13]1[CH:18]=[CH:17][C:16]([C:19]2[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=2)=[CH:15][C:14]=1[N+:25]([O-:27])=[O:26]>CS(C)=O>[CH3:6][O:5][C:3](=[O:4])[CH:2]([C:13]1[CH:18]=[CH:17][C:16]([C:19]2[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=2)=[CH:15][C:14]=1[N+:25]([O-:27])=[O:26])[C:1]([O:8][CH3:9])=[O:7]

Participants

5

Reactant 3

HCID 7943Dimethyl malonateHCID 24758Sodium hydrideHCID 106802714-Fluoro-3-nitro-1,1'-biphenyl

Product 1

HCID 10711410Dimethyl-3-nitrobiphenyl-4-malonate

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent3×

Conditions

Temperature
100 °C

Procedure

Dimethyl malonate (10 ml) in 25 ml of dimethylsulfoxide was added dropwise to 3.5 g of sodium hydride suspended in 25 ml of dimethylsulfoxide and the mixture stirred at 100° C. for 10 minutes. The mixture was ,cooled to room temperature and 4.7 g of 4-fluoro-3-nitrobiphenyl in 25 ml of dimethylsulfoxide was added. The mixture was stirred at 100° C. for 2 hours, cooled and quenched with 300 ml of saturated ammonium chloride solution. The mixture was extracted three times with ethyl acetate and the combined organic layers washed with water and brine and evaporated to give a yellow oil, crude dimethyl-3-nitrobiphenyl-4-malonate.

Workup

  1. customwas ,cooled to room temperature
  2. stirringThe mixture was stirred at 100° C. for 2 hours
  3. temperaturecooled
  4. customquenched with 300 ml of saturated ammonium chloride solution
  5. extractionThe mixture was extracted three times with ethyl acetate
  6. washthe combined organic layers washed with water and brine
  7. customevaporated

Sources & evidence

ORD record
ord-1f4029578bd042bc97cea44af58e39a1
Source dataset
uspto-grants-2005_02
Patent number
US06855730B2

Linked notes

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