p-Toluenesulfonic acid → tert-butyl 2-[(E)-[4-[5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4H-1,2-oxazol-3-yl]-2-methylphenyl]methylideneamino]oxyacetate

HRID 1022839ノート

反応式

HRID 1022839 の反応式
[Cl:1][C:2]1[CH:3]=[C:4]([C:9]2([C:23]([F:26])([F:25])[F:24])[O:13][N:12]=[C:11]([C:14]3[CH:21]=[CH:20][C:17]([CH:18]=O)=[C:16]([CH3:22])[CH:15]=3)[CH2:10]2)[CH:5]=[C:6]([Cl:8])[CH:7]=1.[C:27]([O:31][C:32](=[O:36])[CH2:33][O:34][NH2:35])([CH3:30])([CH3:29])[CH3:28].C1(C)C=CC(S(O)(=O)=O)=CC=1>C1(C)C=CC=CC=1>[C:27]([O:31][C:32](=[O:36])[CH2:33][O:34]/[N:35]=[CH:18]/[C:17]1[CH:20]=[CH:21][C:14]([C:11]2[CH2:10][C:9]([C:4]3[CH:3]=[C:2]([Cl:1])[CH:7]=[C:6]([Cl:8])[CH:5]=3)([C:23]([F:26])([F:24])[F:25])[O:13][N:12]=2)=[CH:15][C:16]=1[CH3:22])([CH3:30])([CH3:29])[CH3:28]

参加物

5

反応物 3

HCID 6101p-Toluenesulfonic acidHCID 12919121tert-Butyl (aminooxy)acetateHCID 866585204-[5-(3,5-Dichloro-phenyl)-5-trifluoromethyl-4,5-dihydro-isoxazol-3-yl]-2-methyl-benzaldehyde2 回

生成物 1

HCID 87403035tert-butyl 2-[(E)-[4-[5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4H-1,2-oxazol-3-yl]-2-methylphenyl]methylideneamino]oxyacetate収率 56%

試薬・触媒・溶媒 1

HCID 1140Toluene溶媒

実験手順

A mixture of 4-[5-(3,5-dichloro-phenyl)-5-trifluoromethyl-4,5-dihydro-isoxazol-3-yl]-2-methyl-benzaldehyde (i.e. the product of Step 1, Example 1, 1.00 g), amino-oxyacetic-acid-tert-butyl-ester (403 mg), p-toluene sulfonic acid (43 mg) and toluene (20 mL) were heated to reflux for 30 min. After cooling, the mixture was washed with water, and the organic layer was dried over Na2SO4. After evaporation the residue was purified by flash chromatography on silica gel to yield the title compound (745 mg, 56%)

後処理

  1. temperaturewere heated
  2. temperatureto reflux for 30 min
  3. temperatureAfter cooling
  4. washthe mixture was washed with water
  5. dry with materialthe organic layer was dried over Na2SO4
  6. customAfter evaporation the residue
  7. customwas purified by flash chromatography on silica gel

出典と根拠

ORDレコード
ord-4080817f084d4468b3caecc65252dbca
出典データセット
uspto-grants-2014_05
特許番号
US08722673B2

反応ノート

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