Cesium carbonate → Methyl cis(+/-)-5-(4-{[(benzyloxy)carbonyl]amino}-3-methoxypiperidin-1-yl)thiophene-2-carboxylate

HRID 43941

反応式

HRID 43941 の反応式
Br[C:2]1[S:6][C:5]([C:7]([O:9][CH2:10]C)=[O:8])=[CH:4][CH:3]=1.[CH3:12][O:13][C@H:14]1[C@@H:19]([NH:20][C:21](=[O:30])[O:22][CH2:23][C:24]2[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=2)[CH2:18][CH2:17][NH:16][CH2:15]1.C1C=CC(P(C2C(C3C(P(C4C=CC=CC=4)C4C=CC=CC=4)=CC=C4C=3C=CC=C4)=C3C(C=CC=C3)=CC=2)C2C=CC=CC=2)=CC=1.C(=O)([O-])[O-].[Cs+].[Cs+]>C1(C)C=CC=CC=1.C(OCC)(=O)C.C([O-])(=O)C.[Pd+2].C([O-])(=O)C>[CH2:23]([O:22][C:21]([NH:20][C@H:19]1[CH2:18][CH2:17][N:16]([C:2]2[S:6][C:5]([C:7]([O:9][CH3:10])=[O:8])=[CH:4][CH:3]=2)[CH2:15][C@H:14]1[O:13][CH3:12])=[O:30])[C:24]1[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=1

参加物

8

反応条件

温度
110 °C

実験手順

A suspension of ethyl 5-bromothiophene-2-carboxylate obtained in Example (244a) (100 mg, 0.45 mmol), benzyl cis(±)-(3-methoxypiperidin-4-yl)-carbamate obtained in Example (40b) (143 mg, 0.54 mmol), palladium acetate (10 mg, 0.05 mmol), BINAP (28 mg, 0.05 mmol) and cesium carbonate (206 mg, 0.63 mmol) in toluene was stirred at 110° C. for 39 hours. The reaction solution was diluted with ethyl acetate, washed with water and brine, and then dried over anhydrous magnesium sulfate. Following filtration, the filtrate was concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography (elution solvent: hexane/ethyl acetate=2/1) to obtain 110 mg of the title compound as a yellow oily substance (60%).

後処理

  1. washwashed with water and brine
  2. dry with materialdried over anhydrous magnesium sulfate
  3. filtrationfiltration
  4. concentrationthe filtrate was concentrated under reduced pressure
  5. customThe resulting residue was purified by silica gel column chromatography (elution solvent: hexane/ethyl acetate=2/1)

出典と根拠

ORDレコード
ord-bf2627a8c0c149f688c086ae44623de2
出典データセット
uspto-grants-2013_09
特許番号
US08536197B2

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