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Ethyl Acetate → 5-(3-chlorophenyl)-1-(4-methoxybenzyl)-3-methyl-1H-pyrazolo[3,4-b]pyridine

HRID 1629922
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HRID 1629922 반응식
Br[C:2]1[CH:3]=[C:4]2[C:10]([CH3:11])=[N:9][N:8]([CH2:12][C:13]3[CH:18]=[CH:17][C:16]([O:19][CH3:20])=[CH:15][CH:14]=3)[C:5]2=[N:6][CH:7]=1.[Cl:21][C:22]1[CH:23]=[C:24](B2OC(C)(C)C(C)(C)O2)[CH:25]=[CH:26][CH:27]=1.C([O-])([O-])=O.[Cs+].[Cs+].C(OCC)(=O)C>COCCOC.CCCCCC.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Cl:21][C:22]1[CH:27]=[C:26]([C:2]2[CH:3]=[C:4]3[C:10]([CH3:11])=[N:9][N:8]([CH2:12][C:13]4[CH:18]=[CH:17][C:16]([O:19][CH3:20])=[CH:15][CH:14]=4)[C:5]3=[N:6][CH:7]=2)[CH:25]=[CH:24][CH:23]=1
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참가 물질

8

반응물 4

HCID 8857Ethyl AcetateHCID 10796Cesium carbonateHCID 100372252-(3-Chlorophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolaneHCID 578563335-bromo-1-(4-methoxybenzyl)-3-methyl-1H-pyrazolo[3,4-b]pyridine

생성물 1

HCID 683885505-(3-chlorophenyl)-1-(4-methoxybenzyl)-3-methyl-1H-pyrazolo[3,4-b]pyridine

시약·촉매·용매 3

HCID 178418397
HCID 178418397, 화합물
촉매
HCID 8058Hexane용매
HCID 80711,2-Dimethoxyethane용매

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온도
100 °C

실험 절차

To a stirred solution of 5-bromo-1-(4-methoxybenzyl)-3-methyl-1H-pyrazolo[3,4-b]pyridine (7) (100 mg, 0.301 mmol, 1 eq) and 2-(3-chlorophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (95) (71 mg, 0.301 mmol, 1 eq) in 1,2-dimethoxyethane (10 mL) was added Cs2CO3 (244 mg, 0.752 mmol, 25 eq) 2M aqueous solution followed by degassing, purging with N2 for 15 min and addition of Pd(PPh3)4 (13 mg, 0.012 mmol, 0.04 eq). The reaction mixture was heated at 100° C. in a sealed tube overnight. After completion of the reaction the mixture was partitioned between ethyl acetate and water and the organic layer was separated and again extracted with ethyl acetate. The combined organic layers were dried over sodium sulphate and the solvent completely distilled off to get the crude. The crude was passed through 100-200 mesh silica gel eluting the pure compound at 50% ethyl acetate in hexane as off-white coloured solid compound 96 (60 mg).

후처리

  1. customby degassing
  2. custompurging with N2 for 15 min
  3. customAfter completion of the reaction the mixture
  4. customwas partitioned between ethyl acetate and water
  5. customthe organic layer was separated
  6. extractionagain extracted with ethyl acetate
  7. dry with materialThe combined organic layers were dried over sodium sulphate
  8. distillationthe solvent completely distilled off
  9. customto get the crude

출처 및 근거

ORD 기록
ord-58afe9a6dca04b13b1440bf09b656dd3
출처 데이터셋
uspto-grants-2014_07
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08791112B2

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