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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
ノート
印刷プレビュー

反応式

HRID 387560 の反応式
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
参加物実験手順後処理出典と根拠反応ノート

参加物

8

反応物 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

生成物 1

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

試薬・触媒・溶媒 4

HCID 178418397
HCID 178418397、化合物
触媒
HCID 962Water溶媒2 回
HCID 3283Diethyl Ether溶媒
HCID 312751,4-Dioxane溶媒

実験手順

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).

後処理

  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)

出典と根拠

ORDレコード
ord-27ac1ccde1f94370b314bc547eee8c76
出典データセット
uspto-grants-2013_02
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08372842B2

反応ノート

読み込み中…

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