Oxalyl chloride → N-(2,6-Difluoro-3-hydroxy-phenyl)-2-fluoro-3-(3-fluorophenyl)-5-methyl-benzamide

HRID 1771618ノート

反応式

HRID 1771618 の反応式
[F:1][C:2]1[C:10]([C:11]2[CH:16]=[CH:15][CH:14]=[C:13]([F:17])[CH:12]=2)=[CH:9][C:8]([CH3:18])=[CH:7][C:3]=1[C:4]([OH:6])=O.C(Cl)(=O)C(Cl)=O.[NH2:25][C:26]1[C:27]([F:34])=[C:28]([OH:33])[CH:29]=[CH:30][C:31]=1[F:32].C([O-])(O)=O.[Na+]>C(Cl)Cl.CN(C=O)C.C1COCC1.O>[F:34][C:27]1[C:28]([OH:33])=[CH:29][CH:30]=[C:31]([F:32])[C:26]=1[NH:25][C:4](=[O:6])[C:3]1[CH:7]=[C:8]([CH3:18])[CH:9]=[C:10]([C:11]2[CH:16]=[CH:15][CH:14]=[C:13]([F:17])[CH:12]=2)[C:2]=1[F:1]

参加物

9

反応物 4

HCID 65578Oxalyl chlorideHCID 516892Sodium BicarbonateHCID 227559833-Amino-2,4-difluorophenolHCID 894435072-Fluoro-3-(3-fluorophenyl)-5-methyl-benzoic acid

生成物 1

HCID 89444178N-(2,6-Difluoro-3-hydroxy-phenyl)-2-fluoro-3-(3-fluorophenyl)-5-methyl-benzamide収率 24%

試薬・触媒・溶媒 4

HCID 6228Dimethylformamide触媒HCID 962Water溶媒HCID 6344Dichloromethane溶媒HCID 8028Tetrahydrofuran溶媒

実験手順

To a stirred solution of 2-fluoro-3-(3-fluorophenyl)-5-methyl-benzoic acid (400 mg, 1.65 mmol, 1.1 eq) in CH2Cl2 (10 mL) was added oxalylchloride (0.5 mL, 5.9 mmol, 4.0 eq) and DMF (2 drops). The reaction was stirred for 1 h, then the solvent removed in vacuo and the residue dissolved in THF (10 mL). The solution was then added dropwise to a mixture of 3-amino-2,4-difluoro-phenol (intermediate X(a)) (212 mg. 1.50 mmol, 1.0 eq) and NaHCO3 (492 mg, 5.90 mmol, 4.0 eq) in THF (10 mL) at room temperature. The reaction was stirred overnight then poured into water and extracted with EtOAc. The combined organic extracts were washed with water and brine, dried (Na2SO4), filtered and evaporated in vacuo. The residue was purified by chromatography (EtOAc:petroleum ether, 0:1 to 1:3) to give the title compound as a solid (130 mg, 24%).

後処理

  1. customthe solvent removed in vacuo
  2. dissolutionthe residue dissolved in THF (10 mL)
  3. stirringThe reaction was stirred overnight
  4. extractionextracted with EtOAc
  5. washThe combined organic extracts were washed with water and brine
  6. dry with materialdried (Na2SO4)
  7. filtrationfiltered
  8. customevaporated in vacuo
  9. customThe residue was purified by chromatography (EtOAc:petroleum ether, 0:1 to 1:3)

出典と根拠

ORDレコード
ord-f35a9636a9b9466c9a16b4bc199379d4
出典データセット
uspto-grants-2016_02
特許番号
US09249085B2

反応ノート

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