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Hydrochloric Acid → 1-Benzyl-5-hydroxy-2-oxo-3-phenyl-8-pyrazin-2-yl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester

HRID 1410950
ノート
印刷プレビュー

反応式

HRID 1410950 の反応式
[CH3:1][O:2][C:3]([C:5]1[C:6]([OH:30])=[C:7]2[C:12](=[C:13](Br)[N:14]=1)[N:11]([CH2:16][C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1)[C:10](=[O:23])[C:9]([C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1)=[CH:8]2)=[O:4].C([Sn](CCCC)(CCCC)[C:36]1[CH:41]=[N:40][CH:39]=[CH:38][N:37]=1)CCC.CCOC(C)=O.Cl>CN(C=O)C.[Cl-].[Na+].O.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[CH3:1][O:2][C:3]([C:5]1[C:6]([OH:30])=[C:7]2[C:12](=[C:13]([C:36]3[CH:41]=[N:40][CH:39]=[CH:38][N:37]=3)[N:14]=1)[N:11]([CH2:16][C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1)[C:10](=[O:23])[C:9]([C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1)=[CH:8]2)=[O:4]
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

8

反応物 4

HCID 313Hydrochloric AcidHCID 8857Ethyl AcetateHCID 27373162-(Tributylstannyl)pyrazineHCID 867141061-Benzyl-8-bromo-5-hydroxy-2-oxo-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester

生成物 1

HCID 1363772421-Benzyl-5-hydroxy-2-oxo-3-phenyl-8-pyrazin-2-yl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester収率 66.2%

試薬・触媒・溶媒 3

HCID 178418476HCID 178418476、化合物触媒HCID 6228Dimethylformamide溶媒HCID 57417360Sodium chloride; water溶媒

反応条件

温度
120 °C

実験手順

A mixture of 1-benzyl-8-bromo-5-hydroxy-2-oxo-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester (60 mg, 0.13 mmol), 2-tributylstannanyl-pyrazine (0.061 mL, 0.19 mmol) and PdCl2(PPh3)2 (18 mg, 0.026 mmol) in 3 mL of DMF was heated at 120° C. for 2 h under nitrogen atmosphere. After the mixture was cooled to r.t., EtOAc and brine were added. 1 M HCl was added with stirring until pH was about 4. The aqueous layer was extracted with additional EtOAc, and the combined organic layer was washed with water and dried over MgSO4. After evaporating the solvent in vacuo, the crude product was chromatographed (5-80% EtOAc/hexanes+1% AcOH) to give 40 mg of the title compound. MS: (+) m/z 465.35 (M+1).

後処理

  1. temperatureAfter the mixture was cooled to r.t.
  2. extractionThe aqueous layer was extracted with additional EtOAc
  3. washthe combined organic layer was washed with water
  4. dry with materialdried over MgSO4
  5. customAfter evaporating the solvent in vacuo
  6. customthe crude product was chromatographed (5-80% EtOAc/hexanes+1% AcOH)

出典と根拠

ORDレコード
ord-cc608987aefb4424b706f1a695bfb884
出典データセット
uspto-grants-2014_12
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08921389B2

反応ノート

読み込み中…

このページの内容参加物反応条件実験手順後処理出典と根拠反応ノート