5-(3,5-Dichlorophenyl)-3-(3-methyl-4-nitrophenyl)-5-trifluoromethyl-4,5-dihydroisoxazole → 3-(4-Amino-3-methylphenyl)-5-(3,5-dichlorophenyl)-5-trifluoromethyl-4,5-dihydroisoxazole

HRID 1096136Notes

Reaction equation

HRID 1096136 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([C:9]2([C:24]([F:27])([F:26])[F:25])[O:13][N:12]=[C:11]([C:14]3[CH:19]=[CH:18][C:17]([N+:20]([O-])=O)=[C:16]([CH3:23])[CH:15]=3)[CH2:10]2)[CH:5]=[C:6]([Cl:8])[CH:7]=1>C(OCC)(=O)C.O.C(O)(=O)C>[NH2:20][C:17]1[CH:18]=[CH:19][C:14]([C:11]2[CH2:10][C:9]([C:4]3[CH:5]=[C:6]([Cl:8])[CH:7]=[C:2]([Cl:1])[CH:3]=3)([C:24]([F:27])([F:26])[F:25])[O:13][N:12]=2)=[CH:15][C:16]=1[CH3:23]

Participants

5

Reactant 1

HCID 231598015-(3,5-Dichlorophenyl)-3-(3-methyl-4-nitrophenyl)-5-trifluoromethyl-4,5-dihydroisoxazole

Product 1

HCID 231598243-(4-Amino-3-methylphenyl)-5-(3,5-dichlorophenyl)-5-trifluoromethyl-4,5-dihydroisoxazoleYield 91.9%

Reagents, catalysts & solvents 3

HCID 176Acetic AcidSolventHCID 962WaterSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
100 °C

Procedure

In a solution of 1.23 g of 5-(3,5-dichlorophenyl)-3-(3-methyl-4-nitrophenyl)-5-trifluoromethyl-4,5-dihydroisoxazole in 10 ml of ethyl acetate, 5.0 ml of water, 5.0 ml of acetic acid and 0.66 g of reduced iron were added and stirred at 100° C. for 2 hours. After the completion of the reaction, the reaction mixture was filtered through Celite, 20 ml of water was added in the filtrate, extracted with ethyl acetate (20 ml×2). The organic phases together were washed with 10 ml of saturated sodium hydrogen carbonate aqueous solution, and then with 10 ml of water, thereafter dehydrated with saturated sodium chloride aqueous solution and dried over anhydrous sodium sulfate, and then the solvent was distilled off under reduced pressure to obtain 1.05 g of crude aimed product as red-brown oily substance. The resulting product was used as such without purification for the next step.

Workup

  1. customAfter the completion of the reaction
  2. filtrationthe reaction mixture was filtered through Celite, 20 ml of water
  3. additionwas added in the filtrate
  4. extractionextracted with ethyl acetate (20 ml×2)
  5. washThe organic phases together were washed with 10 ml of saturated sodium hydrogen carbonate aqueous solution
  6. dry with materialdried over anhydrous sodium sulfate
  7. distillationthe solvent was distilled off under reduced pressure

Sources & evidence

ORD record
ord-e111088b6c3d4bbfb6cba767d0e9f19c
Source dataset
uspto-grants-2012_03
Patent number
US08138213B2

Reaction notes

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