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Methanol → 2-Chloro-4-[5-(3,5-dichlorophenyl)-5-trifluoromethyl-4,5-dihydro-isoxazol-3-yl]benzaldehyde

HRID 471380
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HRID 471380 반응식
C[O:2][C:3](=O)[C:4]1[CH:9]=[CH:8][C:7]([C:10]2[CH2:14][C:13]([C:19]3[CH:24]=[C:23]([Cl:25])[CH:22]=[C:21]([Cl:26])[CH:20]=3)([C:15]([F:18])([F:17])[F:16])[O:12][N:11]=2)=[CH:6][C:5]=1[Cl:27].[H-].C([Al+]CC(C)C)C(C)C.CO>C(Cl)Cl>[Cl:27][C:5]1[CH:6]=[C:7]([C:10]2[CH2:14][C:13]([C:19]3[CH:20]=[C:21]([Cl:26])[CH:22]=[C:23]([Cl:25])[CH:24]=3)([C:15]([F:18])([F:17])[F:16])[O:12][N:11]=2)[CH:8]=[CH:9][C:4]=1[CH:3]=[O:2].[Cl:27][C:5]1[CH:6]=[C:7]([C:10]2[CH2:14][C:13]([C:19]3[CH:20]=[C:21]([Cl:26])[CH:22]=[C:23]([Cl:25])[CH:24]=3)([C:15]([F:17])([F:16])[F:18])[O:12][N:11]=2)[CH:8]=[CH:9][C:4]=1[CH2:3][OH:2]
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참가 물질

6

반응물 3

HCID 887MethanolHCID 21225700DiisobutylaluminumhydrideHCID 866585252-Chloro-4-[5-(3,5-dichloro-phenyl)-5-trifluoromethyl-4,5-dihydro-isoxazol-3-yl]-benzoic Acid Methyl Ester2회

생성물 2

HCID 866315512-Chloro-4-[5-(3,5-dichlorophenyl)-5-trifluoromethyl-4,5-dihydro-isoxazol-3-yl]benzaldehyde수율 66%
HCID 86631552
3-[3-Chloro-4-(hydroxymethyl)phenyl]-5-(3,5-dichlorophenyl)-5-trifluoromethyl-4,5-dihydroisoxazole
수율 24%

시약·촉매·용매 1

HCID 6344Dichloromethane용매

실험 절차

To a solution of 2-Chloro-4-[5-(3,5-dichloro-phenyl)-5-trifluoromethyl-4,5-dihydro-isoxazol-3-yl]-benzoic acid methyl ester (i.e. the product of Step 1, 2.20 g) in CH2Cl2 was added a solution of diisobutyl aluminium hydride (1 M in CH2Cl2 , 10.7 mL) at −78° C. and kept at this temperature for 30 min. MeOH (25 mL) was added carefully and the mixture was allowed to warm to room temp, when aqueous K-Na-tartrate solution was added. The layers were separated and the aqueous phase was extracted with CH2Cl2, combined organic layers were washed with water, dried (Na2SO4) and evaporated. The residue was purified by flash chromatography on silica gel to obtain the title compound (1.35 g, 66%) and 2-Chloro-4-[5-(3,5-dichloro-phenyl)-5-trifluoromethyl-4,5-dihydro-isoxazol-3-yl]-benzyl alcohol (0.49 g, 24%).

후처리

  1. customThe layers were separated
  2. extractionthe aqueous phase was extracted with CH2Cl2
  3. washwere washed with water
  4. dry with materialdried (Na2SO4)
  5. customevaporated
  6. customThe residue was purified by flash chromatography on silica gel

출처 및 근거

ORD 기록
ord-c7ce752b40d6407a8b93400f90f8d24c
출처 데이터셋
uspto-grants-2014_01
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08633134B2

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