Potassium Phosphate, Tribasic → methyl 5-(pyridin-3-yl)-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole-3-carboxylate

HRID 2367711ノート

反応式

HRID 2367711 の反応式
Br[C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)[N:7]([CH:11]1[CH2:16][CH2:15][CH2:14][CH2:13][O:12]1)[N:6]=[C:5]2[C:17]([O:19][CH3:20])=[O:18].[O-]P([O-])([O-])=O.[K+].[K+].[K+].[N:29]1[CH:34]=[CH:33][CH:32]=[C:31](B(O)O)[CH:30]=1>CN(C=O)C.O.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>[N:29]1[CH:34]=[CH:33][CH:32]=[C:31]([C:2]2[CH:3]=[C:4]3[C:8](=[CH:9][CH:10]=2)[N:7]([CH:11]2[CH2:16][CH2:15][CH2:14][CH2:13][O:12]2)[N:6]=[C:5]3[C:17]([O:19][CH3:20])=[O:18])[CH:30]=1

参加物

7

反応物 3

HCID 62657Potassium Phosphate, TribasicHCID 27343783-Pyridinylboronic acidHCID 69803802methyl 5-bromo-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole-3-carboxylate

生成物 1

HCID 86679706methyl 5-(pyridin-3-yl)-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole-3-carboxylate収率 90%

試薬・触媒・溶媒 3

HCID 178418397HCID 178418397、化合物触媒HCID 962Water溶媒HCID 6228Dimethylformamide溶媒

反応条件

温度
90 °C

実験手順

To a solution of methyl 5-bromo-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole-3-carboxylate (CXVII) (7.0 g, 20.6 mmol) in DMF (80 mL) and water (16 mL) was added K3PO4 (6.56 g, 30.9 mmol), pyridin-3-ylboronic acid (CXXXI) (2.79 g, 22.7 mmol), Pd(PPh3)4 (1.19 g, 1.03 mmol) and. The solution was purged with argon and heated at 90° C. for 3 h. The solution was cooled to room temperature and then concentrated under reduced pressure. The residue was dissolved in DCM and washed with water, dried over MgSO4, filtered and then evaporated under vacuum. The residue was purified on a silica gel column (100% DCM→1.5:98.5 MeOH:DCM) to give methyl 5-(pyridin-3-yl)-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole-3-carboxylate (CXXXIX) as an orange oil which solidified at rt (6.28 g, 18.6 mmol, 90% yield). ESIMS found for C19H19N3O3 m/z 338.0 (M+H).

後処理

  1. customThe solution was purged with argon
  2. temperatureThe solution was cooled to room temperature
  3. concentrationconcentrated under reduced pressure
  4. dissolutionThe residue was dissolved in DCM
  5. washwashed with water
  6. dry with materialdried over MgSO4
  7. filtrationfiltered
  8. customevaporated under vacuum
  9. customThe residue was purified on a silica gel column (100% DCM→1.5:98.5 MeOH:DCM)

出典と根拠

ORDレコード
ord-0a414a0399584b1ab7dba7e40d19210b
出典データセット
uspto-grants-2014_04
特許番号
US08697887B2

反応ノート

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