Water → methyl 2-(tert-butoxy)-2-[3-(3,4-dihydro-2H-1-benzopyran-6-yl)thieno[2,3-b]pyridin-2-yl]acetate

HRID 591009노트

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HRID 591009 반응식
C(=O)([O-])[O-].[Na+].[Na+].O.CC1(C)C(C)(C)OB([C:16]2[CH:17]=[C:18]3[C:23](=[CH:24][CH:25]=2)[O:22][CH2:21][CH2:20][CH2:19]3)O1.Br[C:28]1[C:36]2[C:31](=[N:32][CH:33]=[CH:34][CH:35]=2)[S:30][C:29]=1[CH:37]([O:42][C:43]([CH3:46])([CH3:45])[CH3:44])[C:38]([O:40][CH3:41])=[O:39]>CN(C)C=O.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[Pd]>[C:43]([O:42][CH:37]([C:29]1[S:30][C:31]2=[N:32][CH:33]=[CH:34][CH:35]=[C:36]2[C:28]=1[C:16]1[CH:25]=[CH:24][C:23]2[O:22][CH2:21][CH2:20][CH2:19][C:18]=2[CH:17]=1)[C:38]([O:40][CH3:41])=[O:39])([CH3:46])([CH3:44])[CH3:45]

참가 물질

7

반응물 4

HCID 962WaterHCID 10340Sodium CarbonateHCID 438110342-(3,4-dihydro-2H-1-benzopyran-6-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolaneHCID 70855404Methyl 2-{3-bromothieno[2,3-b]pyridin-2-yl}-2-(tert-butoxy)acetate

생성물 1

HCID 70855407methyl 2-(tert-butoxy)-2-[3-(3,4-dihydro-2H-1-benzopyran-6-yl)thieno[2,3-b]pyridin-2-yl]acetate수율 49%

시약·촉매·용매 2

HCID 11979704Tetrakis(triphenylphosphine)palladium촉매HCID 6228Dimethylformamide용매

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온도
110 °C

실험 절차

Under a nitrogen atmosphere, sodium carbonate (16 mg, 0.15 mmol), water (1 mL), palladium tetrakis(triphenylphosphine) (27 mg, 0.02 mmol) and 6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)chroman (40 mg, 0.15 mmol) were added to a solution of methyl 2-{3-bromothieno[2,3-b]pyridin-2-yl}-2-(tert-butoxy)acetate (14g) (55 mg, 0.15 mmol) in N,N-dimethylformamide (4 mL). The mixture was heated at 110° C. for 1 hour. The mixture was then cooled at room temperature, concentrated and water (20 mL) was added. The aqueous layer was extracted with ethyl acetate (2×20 mL). The organic layer was washed with brine (20 mL), dried over sodium sulfate, filtered and evaporated under reduced pressure. The residue was purified by flash chromatography on silica gel (dichloromethane/ethyl acetate 90/10) to afford the desired product (14h) as a white solid (30 mg, 0.07 mmol, 49%).

후처리

  1. temperatureThe mixture was then cooled at room temperature
  2. concentrationconcentrated
  3. additionwater (20 mL) was added
  4. extractionThe aqueous layer was extracted with ethyl acetate (2×20 mL)
  5. washThe organic layer was washed with brine (20 mL)
  6. dry with materialdried over sodium sulfate
  7. filtrationfiltered
  8. customevaporated under reduced pressure
  9. customThe residue was purified by flash chromatography on silica gel (dichloromethane/ethyl acetate 90/10)

출처 및 근거

ORD 기록
ord-a3c273093bd7468c81dff10f0aee832e
출처 데이터셋
uspto-grants-2016_01
특허 번호
US09238026B2

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