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

HRID 552642
Notes
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Reaction equation

HRID 552642 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
ParticipantsProcedureWorkupSources & evidenceReaction notes

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 521998
p-Toluenesulfonic acid monohydrate
Catalyst
HCID 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-6fa8cb8356db42518a6edce3413f5096
Source dataset
uspto-grants-2011_05
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07951828B1

Reaction notes

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