2,6-Dichlorobenzaldchloroxime → 2,2-dichloro-N-[2-[3-(2,6-dichlorophenyl)-5-isoxazolyl]phenyl]acetamide

HRID 1352225노트

반응식

HRID 1352225 반응식
[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([Cl:8])[C:3]=1[C:9](Cl)=[N:10][OH:11].[Cl:13][CH:14]([Cl:26])[C:15]([NH:17][C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][C:19]=1[C:24]#[CH:25])=[O:16]>O1CCCC1.C(N(CC)CC)C>[Cl:13][CH:14]([Cl:26])[C:15]([NH:17][C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][C:19]=1[C:24]1[O:11][N:10]=[C:9]([C:3]2[C:2]([Cl:1])=[CH:7][CH:6]=[CH:5][C:4]=2[Cl:8])[CH:25]=1)=[O:16]

참가 물질

5

반응물 2

HCID 28001642,6-DichlorobenzaldchloroximeHCID 211003322,2-Dichloro-N-(2-ethynylphenyl)Acetamide2회

생성물 1

HCID 98019752,2-dichloro-N-[2-[3-(2,6-dichlorophenyl)-5-isoxazolyl]phenyl]acetamide

시약·촉매·용매 2

HCID 8028Tetrahydrofuran용매HCID 8471Triethylamine용매

실험 절차

2,6-Dichloro-N-hydroxybenzenecarboximidoyl chloride (1.25 g, 5.6 mmol) and 2,2-dichloro-N-(2-ethynylphenyl)acetamide (1.93 g, 8.5 mmol) were dissolved in anhydrous tetrahydrofuran (40 mL) and triethylamine (1.0 mL). The mixture was stirred at room temperature for 1 h then heated at reflux for 4 h to generate the 2,6-dichlorophenyl nitrile oxide intermediate, which reacted by a 1,3-dipolar cycloaddition reaction with 2,2-dichloro-N-(2-ethynylphenyl)acetamide. The solvent was removed under reduced pressure. The residue was dissolved in ethyl acetate and washed successively with water and brine. The ethyl acetate solution was dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The resulting solid was purified by column chromatography on silica gel, eluting with 8:2 hexanes-ethyl acetate. The appropriate fractions were combined to give 2,2-dichloro-N-[2-[3-(2,6-dichlorophenyl)-5-isoxazolyl]phenyl]acetamide as a light brown solid, 1.24 g.

후처리

  1. temperaturethen heated
  2. temperatureat reflux for 4 h
  3. customThe solvent was removed under reduced pressure
  4. dissolutionThe residue was dissolved in ethyl acetate
  5. washwashed successively with water and brine
  6. dry with materialThe ethyl acetate solution was dried over anhydrous sodium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated under reduced pressure
  9. customThe resulting solid was purified by column chromatography on silica gel
  10. washeluting with 8:2 hexanes-ethyl acetate

출처 및 근거

ORD 기록
ord-26eb8ac643894670a7e20283323dc8b2
출처 데이터셋
uspto-grants-2007_05
특허 번호
US07220745B2

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