Hydrochloric Acid → 7-Benzyl-1-(5-fluoro-pyridin-3-yl)-4-hydroxy-8-oxo-7,8-dihydro-[2,7]naphthyridine-3-carboxylic acid methyl ester

HRID 1410741ノート

反応式

HRID 1410741 の反応式
[CH3:1][O:2][C:3]([C:5]1[N:6]=[C:7](I)[C:8]2[C:9](=[O:23])[N:10]([CH2:16][C:17]3[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=3)[CH:11]=[CH:12][C:13]=2[C:14]=1[OH:15])=[O:4].[F:25][C:26]1[CH:27]=[C:28](B(O)O)[CH:29]=[N:30][CH:31]=1.C([O-])([O-])=O.[Cs+].[Cs+].Cl>CN(C=O)C.[Cl-].[Na+].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.CCOC(C)=O>[CH3:1][O:2][C:3]([C:5]1[N:6]=[C:7]([C:28]2[CH:29]=[N:30][CH:31]=[C:26]([F:25])[CH:27]=2)[C:8]2[C:9](=[O:23])[N:10]([CH2:16][C:17]3[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=3)[CH:11]=[CH:12][C:13]=2[C:14]=1[OH:15])=[O:4]

参加物

9

反応物 4

HCID 313Hydrochloric AcidHCID 10796Cesium carbonateHCID 44717403(5-Fluoropyridin-3-yl)boronic acidHCID 867141107-Benzyl-4-hydroxy-1-iodo-8-oxo-7,8-dihydro-[2,7]naphthyridine-3-carboxylic acid methyl ester

生成物 1

HCID 682973507-Benzyl-1-(5-fluoro-pyridin-3-yl)-4-hydroxy-8-oxo-7,8-dihydro-[2,7]naphthyridine-3-carboxylic acid methyl ester収率 55.7%

試薬・触媒・溶媒 4

HCID 178418397HCID 178418397、化合物触媒HCID 6228Dimethylformamide溶媒HCID 8857Ethyl Acetate溶媒HCID 57417360Sodium chloride; water溶媒

反応条件

温度
100 °C

実験手順

A mixture of 7-benzyl-4-hydroxy-1-iodo-8-oxo-7,8-dihydro-[2,7]naphthyridine-3-carboxylic acid methyl ester (117 mg, 0.27 mmol), 5-fluoropyridine-3-boronic acid (45 mg, 0.32 mmol), Cs2CO3 (175 mg, 0.54 mmol) and Pd(PPh3)4 (31 mg, 0.027 mmol) in 5 mL of DMF was heated at 100° C. for 16 h under N2 atmosphere. After the mixture was cooled to r.t., EtOAc (50 mL) and brine (10 mL) 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 dried over MgSO4 and concentrated. The crude product was purified by silica gel chromatography (5-70% EtOAc/hexanes) to give 61 mg of the title compound. MS: (+) m/z 405.97 (M+1).

後処理

  1. temperatureAfter the mixture was cooled to r.t.
  2. extractionThe aqueous layer was extracted with additional EtOAc
  3. dry with materialthe combined organic layer was dried over MgSO4
  4. concentrationconcentrated
  5. customThe crude product was purified by silica gel chromatography (5-70% EtOAc/hexanes)

出典と根拠

ORDレコード
ord-b0cf351887e84c40b8d84c8067631426
出典データセット
uspto-grants-2014_12
特許番号
US08921389B2

反応ノート

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