Dimethylformamide → HCID 178434462, 화합물

HRID 899416노트

반응식

HRID 899416 반응식
[Li]C(C)(C)C.Br[C:7]1[CH:8]=[C:9]2[C:15]([CH3:16])=[N:14][NH:13][C:10]2=[N:11][CH:12]=1.CN([CH:20]=[O:21])C>C1COCC1>[CH3:16][C:15]1[C:9]2[C:10](=[N:11][CH:12]=[C:7]([CH:20]=[O:21])[CH:8]=2)[NH:13][N:14]=1

참가 물질

5

반응물 3

HCID 6228DimethylformamideHCID 178418306HCID 178418306, 화합물HCID 178434433HCID 178434433, 화합물

생성물 1

HCID 178434462HCID 178434462, 화합물수율 20.5%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매2회

실험 절차

80 ml anhydrous THF were charged into a 250 ml round bottom flask and was chilled to −78° C. t-BuLi (1.70 M in THF, 17.6 ml, 30 mmol) was added to the flask via syringe. After stirring for 5 min, 5-bromo-3-methyl-1H-pyrazolo[3,4-b]pyridine (2.12 g,10 mmol) was added dropwise via syringe. After 30 min, DMF (3.65 g, 50 mmol) in 20 ml THF was added dropwise and the mixture was stirred for overnight. The reaction was quenched by saturated aqueous ammonium chloride. After evaporating the excess THF, the reaction mixture was extracrted by ethylacetate twice. The combined organic layer was washed with brine once and dried over sodium sulfate. The crude product was chromatographed with 50% ethylacetate in hexane to afford the desired product (0.23 g, y=20.5%).

후처리

  1. additionwas added to the flask via syringe
  2. waitAfter 30 min
  3. stirringthe mixture was stirred for overnight
  4. customThe reaction was quenched by saturated aqueous ammonium chloride
  5. customAfter evaporating the excess THF
  6. washThe combined organic layer was washed with brine once
  7. dry with materialdried over sodium sulfate
  8. customThe crude product was chromatographed with 50% ethylacetate in hexane

출처 및 근거

ORD 기록
ord-a1b8a868ad4447aaaf5ce3949c44fdbf
출처 데이터셋
uspto-grants-2008_04
특허 번호
US07354944B2

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