Cyanogen Bromide → 5-(5-amino-[1,3,4]oxadiazol-2-yl)-4-(4-bromo-2-fluorophenylamino)-3-fluoro-1-methyl-1H-pyridin-2-one

HRID 15921

반응식

HRID 15921 반응식
[N:1]#[C:2]Br.[Br:4][C:5]1[CH:10]=[CH:9][C:8]([NH:11][C:12]2[C:13]([C:21]([NH:23][NH2:24])=[O:22])=[CH:14][N:15]([CH3:20])[C:16](=[O:19])[C:17]=2[F:18])=[C:7]([F:25])[CH:6]=1.C([O-])(O)=O.[Na+]>O1CCOCC1.O>[NH2:1][C:2]1[O:22][C:21]([C:13]2[C:12]([NH:11][C:8]3[CH:9]=[CH:10][C:5]([Br:4])=[CH:6][C:7]=3[F:25])=[C:17]([F:18])[C:16](=[O:19])[N:15]([CH3:20])[CH:14]=2)=[N:23][N:24]=1

참가 물질

6

반응물 3

HCID 10476Cyanogen Bromide2회HCID 516892Sodium BicarbonateHCID 666737984-(4-Bromo-2-fluorophenylamino)-5-fluoro-1-methyl-6-oxo-1,6-dihydropyridine-3-carboxylic acid hydrazide

생성물 1

HCID 111654245-(5-amino-[1,3,4]oxadiazol-2-yl)-4-(4-bromo-2-fluorophenylamino)-3-fluoro-1-methyl-1H-pyridin-2-one수율 89.2%

시약·촉매·용매 2

HCID 962Water용매HCID 312751,4-Dioxane용매

실험 절차

Cyanogen bromide (36 mg, 0.31 mmol) was added to a suspension of 4-(4-bromo-2-fluorophenylamino)-5-fluoro-1-methyl-6-oxo-1,6-dihydropyridine-3-carboxylic acid hydrazide (63 mg, 0.169 mmol) in dioxane (2 mL) followed by an aqueous NaHCO3 (2 mL of a 0.09 M solution) solution. After 17 hours, additional cyanogen bromide (14 mg) was added. After 19 hours, the reaction mixture was diluted with water and extracted with ethyl acetate. The combined organic extracts were washed with brine, dried (MgSO4) and concentrated under reduced pressure. Crystallization (MeOH:THF) followed by trituration (Et2O:MeOH 5:1) gave clean desired product as a white solid (60 mg, 89%). MS APCI (+) m/z 398, 400 (M+, Br pattern) detected; 1H NMR (400 MHz, CD3OD) δ 8.06 (s, 1H), 7.37 (d, 1H), 7.31 (d, 1H), 7.10 (td, 1H), 3.64 (s, 3H).

후처리

  1. waitAfter 19 hours
  2. extractionextracted with ethyl acetate
  3. washThe combined organic extracts were washed with brine
  4. dry with materialdried (MgSO4)
  5. concentrationconcentrated under reduced pressure
  6. customCrystallization (MeOH:THF)

출처 및 근거

ORD 기록
ord-4150cd00a7bd40c9bc08f6e9687dc505
출처 데이터셋
uspto-grants-2010_06
특허 번호
US07732616B2

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