2,3-Dihydrofuran → 4-[5-(3,5-Dichlorophenyl)-5-trifluoromethyl-4,5-dihydroisoxazol-3-yl]-2-methyl-N-(2-tetrahydrofuranyl) benzoic acid amide

HRID 1187973Notes

Reaction equation

HRID 1187973 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:22]=[CH:21][C:17]([C:18]([NH2:20])=[O:19])=[C:16]([CH3:23])[CH:15]=3)[CH2:10]2)[CH:5]=[C:6]([Cl:8])[CH:7]=1.[O:28]1[CH:32]=[CH:31][CH2:30][CH2:29]1.C(=O)([O-])O.[Na+]>ClCCl.O.C1(C)C=CC(S(O)(=O)=O)=CC=1>[Cl:1][C:2]1[CH:3]=[C:4]([C:9]2([C:24]([F:25])([F:27])[F:26])[O:13][N:12]=[C:11]([C:14]3[CH:22]=[CH:21][C:17]([C:18]([NH:20][CH:29]4[CH2:30][CH2:31][CH2:32][O:28]4)=[O:19])=[C:16]([CH3:23])[CH:15]=3)[CH2:10]2)[CH:5]=[C:6]([Cl:8])[CH:7]=1

Participants

6

Reactant 3

HCID 709342,3-DihydrofuranHCID 516892Sodium BicarbonateHCID 667845734-(5-(3,5-Dichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazol-3-yl)-2-methylbenzamide

Product 1

HCID 252170264-[5-(3,5-Dichlorophenyl)-5-trifluoromethyl-4,5-dihydroisoxazol-3-yl]-2-methyl-N-(2-tetrahydrofuranyl) benzoic acid amideYield 80.8%

Reagents, catalysts & solvents 2

HCID 521998p-Toluenesulfonic acid monohydrateCatalystHCID 6344DichloromethaneSolvent

Procedure

In a solution of 1.25 g of 4-[5-(3,5-dichlorophenyl)-5-trifluoromethyl-4,5-dihydroisoxazol-3-yl]-2-methyl benzoic acid amide synthesized in Step 1 of Synthetic Example 19 and 0.32 g of 2,3-dihydrofuran in 30 mL of dichloromethane, 0.01 g of p-toluene sulfonic acid monohydrate was added at room temperature with stirring, and stirred at room temperature for 3 days. After the completion of the reaction, 30 mL of saturated sodium hydrogen carbonate aqueous solution was added in the reaction mixture, extracted with ethyl acetate (30 mL×2), the organic phase was dehydrated with and dried over saturated sodium chloride aqueous solution and then anhydrous sodium sulfate, and the solvent was distilled off under reduced pressure. The residue was purified with silica gel column chromatography that was eluated with ethyl acetate-hexane (1:1) to obtain 1.18 g of the aimed product as colorless resinous substance.

Workup

  1. stirringstirred at room temperature for 3 days
  2. additionwas added in the reaction mixture
  3. extractionextracted with ethyl acetate (30 mL×2)
  4. dry with materialdried over saturated sodium chloride aqueous solution
  5. distillationanhydrous sodium sulfate, and the solvent was distilled off under reduced pressure
  6. customThe residue was purified with silica gel column chromatography that

Sources & evidence

ORD record
ord-361421c4b471448aa049b66a0d7a08f3
Source dataset
uspto-grants-2014_03
Patent number
US08673951B2

Reaction notes

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