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Cesium fluoride → Tert-butyl 4-[4-[6-amino-5-(6-fluorooxazolo[4,5-b]pyridin-2-yl)-3-pyridyl]pyrazol-1-yl]piperidine-1-carboxylate

HRID 908416
ノート
印刷プレビュー

反応式

HRID 908416 の反応式
CC1(C)C(C)(C)OB([C:9]2[CH:10]=[N:11][N:12]([CH:14]3[CH2:19][CH2:18][N:17]([C:20]([O:22][C:23]([CH3:26])([CH3:25])[CH3:24])=[O:21])[CH2:16][CH2:15]3)[CH:13]=2)O1.Br[C:29]1[CH:30]=[C:31]([C:36]2[O:37][C:38]3[C:39]([N:45]=2)=[N:40][CH:41]=[C:42]([F:44])[CH:43]=3)[C:32]([NH2:35])=[N:33][CH:34]=1.[F-].[Cs+]>[Pd](Cl)Cl.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.CO>[NH2:35][C:32]1[N:33]=[CH:34][C:29]([C:9]2[CH:10]=[N:11][N:12]([CH:14]3[CH2:15][CH2:16][N:17]([C:20]([O:22][C:23]([CH3:24])([CH3:25])[CH3:26])=[O:21])[CH2:18][CH2:19]3)[CH:13]=2)=[CH:30][C:31]=1[C:36]1[O:37][C:38]2[C:39]([N:45]=1)=[N:40][CH:41]=[C:42]([F:44])[CH:43]=2
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

6

反応物 3

HCID 25953Cesium fluorideHCID 45480279tert-butyl 4-[4-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl]piperidine-1-carboxylateHCID 67388498HCID 67388498、化合物

生成物 1

HCID 67389039Tert-butyl 4-[4-[6-amino-5-(6-fluorooxazolo[4,5-b]pyridin-2-yl)-3-pyridyl]pyrazol-1-yl]piperidine-1-carboxylate収率 87.5%

試薬・触媒・溶媒 2

HCID 6102075
Dichlorobis(triphenylphosphine)palladium
触媒
HCID 887Methanol溶媒

反応条件

温度
120 °C

実験手順

Tert-butyl 4-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazol-1-yl]piperidine-1-carboxylate (222 mg) and 5-bromo-3-(6-fluorooxazolo[4,5-b]pyridin-2-yl)pyridin-2-amine (140 mg), bis(triphenylphosphine) palladium (II) chloride (15.9 mg) and caesium fluoride (172 mg) were weighed out in a microwave vial and sealed. Methanol (2 ml) was added and nitrogen was bubbled in the resulting suspension. The resulting mixture was heated in a 300 W microwave at 120° C. for 20 minutes. The crude product was purified by flash chromatography on silica gel (dried deposit with silica gel) eluting with 0 to 5% methanol in dichloromethane. The solvent was evaporated to dryness to afford tert-butyl 4-[4-[6-amino-5-(6-fluorooxazolo[4,5-b]pyridin-2-yl)-3-pyridyl]pyrazol-1-yl]piperidine-1-carboxylate (190 mg). NMR Spectrum: (CDCl3) 1.49 (s, 9H), 1.94-2.03 (m, 2H), 2.16-2.24 (m, 2H), 2.84-3.00 (m, 2H), 3.28 (bs, 2H), 3.29-3.37 (m, 1H), 6.94 (bs, 2H), 7.66 (dd, 1H), 7.68 (s, 1H), 7.79 (s, 1H), 8.35 (d, 1H), 8.45 (d, 1H), 8.48 (dd, 1H); Mass spectrum: M+H+ 480.

後処理

  1. customsealed
  2. customnitrogen was bubbled in the resulting suspension
  3. customThe crude product was purified by flash chromatography on silica gel (dried deposit with silica gel)
  4. washeluting with 0 to 5% methanol in dichloromethane
  5. customThe solvent was evaporated to dryness

出典と根拠

ORDレコード
ord-efe8c8345f404801824827897ecf7bb8
出典データセット
uspto-grants-2011_09
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08017611B2

反応ノート

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