Water → 3,4-difluoro-2-(2-fluoro-4-iodo-phenylamino)-N-(2-hydroxy-ethoxy)-5-[(2-hydroxy-ethoxyamino)-methyl]-benzamide

HRID 20726노트

반응식

HRID 20726 반응식
[F:1][C:2]1[C:3]([NH:22][C:23]2[CH:28]=[CH:27][C:26]([I:29])=[CH:25][C:24]=2[F:30])=[C:4]([CH:12]=[C:13](/[CH:16]=[N:17]/[O:18][CH2:19][CH2:20][OH:21])[C:14]=1[F:15])[C:5]([NH:7][O:8][CH2:9][CH2:10][OH:11])=[O:6].FC(F)(F)C(O)=O.C([BH3-])#N.[Na+].O>CO>[F:1][C:2]1[C:3]([NH:22][C:23]2[CH:28]=[CH:27][C:26]([I:29])=[CH:25][C:24]=2[F:30])=[C:4]([CH:12]=[C:13]([CH2:16][NH:17][O:18][CH2:19][CH2:20][OH:21])[C:14]=1[F:15])[C:5]([NH:7][O:8][CH2:9][CH2:10][OH:11])=[O:6]

참가 물질

6

반응물 4

HCID 962WaterHCID 6422Trifluoroacetic acidHCID 5003444Sodium cyanoborohydrideHCID 113072243,4-difluoro-2-(2-fluoro-4-iodoanilino)-N-(2-hydroxyethoxy)-5-[(E)-2-hydroxyethoxyiminomethyl]benzamide

생성물 1

HCID 115774573,4-difluoro-2-(2-fluoro-4-iodo-phenylamino)-N-(2-hydroxy-ethoxy)-5-[(2-hydroxy-ethoxyamino)-methyl]-benzamide

시약·촉매·용매 1

HCID 887Methanol용매

실험 절차

To a solution of (E)-3,4-difluoro-2-(2-fluoro-4-iodo-phenylamino)-N-(2-hydroxy-ethoxy)-5-[(2-hydroxy-ethoxyimino)-methyl]-benzamide (3.62 g, 6.70 mmol) obtained in Step B in methanol (100 ml) were added portionwise trifluoroacetic acid (6.5 ml) and sodium cyanoborohydride (3.78 g, 60.2 mmol) over 2 days while monitoring the progression of the reaction by TLC. The reaction mixture was poured into water, and extracted with ethyl acetate. The organic layer was washed with saturated aqueous sodium bicarbonate, dried over magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (CH2Cl2/MeOH (15:1)), and the resultant crude compound was crystallized from methylene chloride to give 3,4-difluoro-2-(2-fluoro-4-iodo-phenylamino)-N-(2-hydroxy-ethoxy)-5-[(2-hydroxy-ethoxyamino)-methyl]-benzamide (1.66 g, 46%, as a total of first and second crystals).

후처리

  1. customthe progression of the reaction by TLC
  2. extractionextracted with ethyl acetate
  3. washThe organic layer was washed with saturated aqueous sodium bicarbonate
  4. dry with materialdried over magnesium sulfate
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was purified by silica gel column chromatography (CH2Cl2/MeOH (15:1))
  7. customthe resultant crude compound was crystallized from methylene chloride

출처 및 근거

ORD 기록
ord-7d9fb428ff414262adbf4997cde31aae
출처 데이터셋
uspto-grants-2010_06
특허 번호
US07745663B2

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