Ethylene Glycol → 5-[1,3]dioxolan-2-yl-3,4-difluoro-2-(2-fluoro-4-iodo-phenylamino)-N-(2-hydroxy-ethoxy)-benzamide

HRID 20723ノート

反応式

HRID 20723 の反応式
[F:1][C:2]1[C:3]([NH:18][C:19]2[CH:24]=[CH:23][C:22]([I:25])=[CH:21][C:20]=2[F:26])=[C:4]([CH:12]=[C:13]([CH:16]=[O:17])[C:14]=1[F:15])[C:5]([NH:7][O:8][CH2:9][CH2:10][OH:11])=[O:6].[CH2:27](O)[CH2:28][OH:29].O.C1(C)C=CC(S(O)(=O)=O)=CC=1.C(=O)(O)[O-].[Na+]>C1COCC1>[O:17]1[CH2:27][CH2:28][O:29][CH:16]1[C:13]1[C:14]([F:15])=[C:2]([F:1])[C:3]([NH:18][C:19]2[CH:24]=[CH:23][C:22]([I:25])=[CH:21][C:20]=2[F:26])=[C:4]([CH:12]=1)[C:5]([NH:7][O:8][CH2:9][CH2:10][OH:11])=[O:6]

参加物

6

反応物 4

HCID 174Ethylene Glycol2 回HCID 516892Sodium BicarbonateHCID 521998p-Toluenesulfonic acid monohydrateHCID 231323883,4-difluoro-2-(2-fluoro-4-iodo-phenylamino)-5-formyl-N-(2-hydroxy-ethoxy)-benzamide

生成物 1

HCID 593480285-[1,3]dioxolan-2-yl-3,4-difluoro-2-(2-fluoro-4-iodo-phenylamino)-N-(2-hydroxy-ethoxy)-benzamide

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

実験手順

To a solution of 3,4-difluoro-2-(2-fluoro-4-iodo-phenylamino)-5-formyl-N-(2-hydroxy-ethoxy)-benzamide (15.99 g, 33.3 mmol) prepared in Step F in anhydrous THF (150 ml) were added ethylene glycol (70 ml) and p-toluenesulfonic acid monohydrate (316.6 mg, 1.66 mmol) at room temperature, and the mixture was stirred for 14 hours. Then ethylene glycol (100 ml) was added, and the reaction mixture was stirred for additional 8 hours. The reaction mixture was poured into saturated aqueous sodium bicarbonate, and extracted with ethyl acetate. The organic layer was washed with saturated aqueous sodium bicarbonate and saturated brine, dried over magnesium sulfate, and concentrated under reduced pressure to give 5-[1,3]dioxolan-2-yl-3,4-difluoro-2-(2-fluoro-4-iodo-phenylamino)-N-(2-hydroxy-ethoxy)-benzamide (21.69 g) as a crude product.

後処理

  1. stirringthe reaction mixture was stirred for additional 8 hours
  2. extractionextracted with ethyl acetate
  3. washThe organic layer was washed with saturated aqueous sodium bicarbonate and saturated brine
  4. dry with materialdried over magnesium sulfate
  5. concentrationconcentrated under reduced pressure

出典と根拠

ORDレコード
ord-d78b9bfc5a1e45b384076dfa93ddada7
出典データセット
uspto-grants-2010_06
特許番号
US07745663B2

反応ノート

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