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Diethyl Ether → Methyl 3-azido-6-(3-fluoro-4-methoxyphenyl)-2-(4-(methoxycarbonyl)phenyl)isonicotinate

HRID 2410740
ノート
印刷プレビュー

反応式

HRID 2410740 の反応式
[NH2:1][C:2]1[C:11]([C:12]2[CH:17]=[CH:16][C:15]([C:18]([O:20][CH3:21])=[O:19])=[CH:14][CH:13]=2)=[N:10][C:9]([C:22]2[CH:27]=[CH:26][C:25]([O:28][CH3:29])=[C:24]([F:30])[CH:23]=2)=[CH:8][C:3]=1[C:4]([O:6][CH3:7])=[O:5].N([O-])=O.[Na+].[N-:35]=[N+:36]=[N-].[Na+].C(OCC)C>FC(F)(F)C(O)=O>[N:1]([C:2]1[C:11]([C:12]2[CH:13]=[CH:14][C:15]([C:18]([O:20][CH3:21])=[O:19])=[CH:16][CH:17]=2)=[N:10][C:9]([C:22]2[CH:27]=[CH:26][C:25]([O:28][CH3:29])=[C:24]([F:30])[CH:23]=2)=[CH:8][C:3]=1[C:4]([O:6][CH3:7])=[O:5])=[N+:35]=[N-:36]
参加物実験手順後処理出典と根拠反応ノート

参加物

6

反応物 4

HCID 3283Diethyl EtherHCID 33557Sodium AzideHCID 23668193Sodium NitriteHCID 66604696Methyl 3-amino-6-(3-fluoro-4-methoxyphenyl)-2-(4-(methoxycarbonyl)phenyl)isonicotinate

生成物 1

HCID 86663018Methyl 3-azido-6-(3-fluoro-4-methoxyphenyl)-2-(4-(methoxycarbonyl)phenyl)isonicotinate収率 99.5%

試薬・触媒・溶媒 1

HCID 6422Trifluoroacetic acid溶媒

実験手順

Methyl 3-amino-6-(3-fluoro-4-methoxyphenyl)-2-(4-(methoxycarbonyl)phenyl)-isonicotinate (1.00 g, 2.44 mmol) was dissolved in trifluoroacetic acid (12 mL) and the yellow solution was cooled in an ice bath. Powdered sodium nitrite (0.336 gm, 4.87 mmol) was added with stirring to give a dark red mixture. After 30 min, powdered sodium azide (1.59 g, 24.4 mmol) was added followed by diethyl ether (12 mL). The light red mixture was stirred in the ice bath for 30 min. The reaction was partitioned between EtOAc and sufficient saturated aqueous NaHCO3 solution (gas evolution) to neutralize the acid. The organic phase was washed with brine, dried with sodium sulfate, and the solvent removed. Flash silica gel chromatography (elution with a 1:1 mixture of methylene chloride and EtOAc) afforded methyl 3-azido-6-(3-fluoro-4-methoxyphenyl)-2-(4-(methoxycarbonyl)phenyl)isonicotinate (1.06 gm). 1H NMR (CDCl3) δ ppm 8.17 (2H, d, J=7.93 Hz), 8.01 (1H, s), 7.91 (2H, d, J=7.93 Hz), 7.82-7.88 (1H, m), 7.79 (1H, d, J=8.55 Hz), 7.04 (1H, t, J=8.55 Hz), 4.05 (3H, s), 3.96 (3H, s), 3.94 (3H, s).

後処理

  1. temperaturethe yellow solution was cooled in an ice bath
  2. customto give a dark red mixture
  3. customThe reaction was partitioned between EtOAc and sufficient saturated aqueous NaHCO3 solution (gas evolution)
  4. washThe organic phase was washed with brine
  5. dry with materialdried with sodium sulfate
  6. customthe solvent removed
  7. washFlash silica gel chromatography (elution
  8. additionwith a 1:1 mixture of methylene chloride and EtOAc)

出典と根拠

ORDレコード
ord-d72d954cbb17401db96de4beba57a824
出典データセット
uspto-grants-2014_08
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08815840B2

反応ノート

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