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Cesium carbonate → tert-butyl 4-(5-(3-fluorophenyl)-1-(4-methoxybenzyl)-1H-pyrazolo[3,4-b]pyridin-4-yl)piperazine-1-carboxylate

HRID 387560
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HRID 387560 반응식
Br[C:2]1[C:3]([N:20]2[CH2:25][CH2:24][N:23]([C:26]([O:28][C:29]([CH3:32])([CH3:31])[CH3:30])=[O:27])[CH2:22][CH2:21]2)=[C:4]2[CH:10]=[N:9][N:8]([CH2:11][C:12]3[CH:17]=[CH:16][C:15]([O:18][CH3:19])=[CH:14][CH:13]=3)[C:5]2=[N:6][CH:7]=1.[F:33][C:34]1[CH:35]=[C:36](B(O)O)[CH:37]=[CH:38][CH:39]=1.C([O-])([O-])=O.[Cs+].[Cs+]>O1CCOCC1.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.O.CCOCC>[F:33][C:34]1[CH:39]=[C:38]([C:2]2[C:3]([N:20]3[CH2:25][CH2:24][N:23]([C:26]([O:28][C:29]([CH3:32])([CH3:31])[CH3:30])=[O:27])[CH2:22][CH2:21]3)=[C:4]3[CH:10]=[N:9][N:8]([CH2:11][C:12]4[CH:17]=[CH:16][C:15]([O:18][CH3:19])=[CH:14][CH:13]=4)[C:5]3=[N:6][CH:7]=2)[CH:37]=[CH:36][CH:35]=1
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참가 물질

8

반응물 3

HCID 10796Cesium carbonateHCID 27339863-Fluorophenylboronic acidHCID 68760849tert-butyl 4-(5-bromo-1-(4-methoxybenzyl)-1H-pyrazolo[3,4-b]pyridin-4-yl)piperazine-1-carboxylate

생성물 1

HCID 68758144tert-butyl 4-(5-(3-fluorophenyl)-1-(4-methoxybenzyl)-1H-pyrazolo[3,4-b]pyridin-4-yl)piperazine-1-carboxylate수율 81%

시약·촉매·용매 4

HCID 178418397
HCID 178418397, 화합물
촉매
HCID 962Water용매2회
HCID 3283Diethyl Ether용매
HCID 312751,4-Dioxane용매

실험 절차

A solution of tert-butyl 4-(5-bromo-1-(4-methoxybenzyl)-1H-pyrazolo[3,4-b]pyridin-4-yl)piperazine-1-carboxylate (0.30 g, 0.597 mmol, see Example 1), 3-fluorophenylboronic acid (0.125 g, 0.896 mmol), Pd(PPh3)4 (0.0690 g, 0.0597 mmol) and Cs2CO3 (0.778 g, 2.39 mmol) in dioxane:H2O (8 mL, 3:1) was heated at 80° C. for 6 hours. Ether (50 mL) and H2O (20 mL) were then added. The organic layer was separated, washed with brine and dried over sodium sulfate. After removal of solvent, the resulting residue was purified by column chromatography (DCM:ethyl acetate, 5:1) to give tert-butyl 4-(5-(3-fluorophenyl)-1-(4-methoxybenzyl)-1H-pyrazolo[3,4-b]pyridin-4-yl)piperazine-1-carboxylate (0.25 g, 81%) as a solid. MS ESI (+) m/z 518.4 detected. 1H NMR (400 Hz, DMSO-d6) δ 8.31 (s, 1H), 8.16 (s, 1H), 7.51 (m, 1H), 7.39 (m, 2H), 7.23 (d, J=8.8 Hz, 2H), 7.18 (m,l H), 6.86 (d, J=8.8 Hz, 2H), 5.53 (s, 2H), 3.70 (s, 3H), 3.29 (m, 4H), 3.25 (m, 4H).

후처리

  1. customThe organic layer was separated
  2. washwashed with brine
  3. dry with materialdried over sodium sulfate
  4. customAfter removal of solvent
  5. customthe resulting residue was purified by column chromatography (DCM:ethyl acetate, 5:1)

출처 및 근거

ORD 기록
ord-27ac1ccde1f94370b314bc547eee8c76
출처 데이터셋
uspto-grants-2013_02
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08372842B2

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