Pyridine → (S)-N-(3-(1-ethyl-1H-pyrazol-5-yloxy)-5-(pyridin-2-ylthio)pyridin-2-yl)-3-(2,2,5,5-tetramethyl-1,3-dioxolan-4-yl)-1,2,4-thiadiazol-5-amine

HRID 534047ノート

反応式

HRID 534047 の反応式
[N-:1]=[C:2]=[S:3].[Na+].N1C=CC=CC=1.[CH3:11][C:12]1([CH3:27])[O:16][C@@H:15]([C:17](Cl)=[N:18]OS(C)(=O)=O)[C:14]([CH3:26])([CH3:25])[O:13]1.[CH2:28]([N:30]1[C:34]([O:35][C:36]2[C:37]([NH2:49])=[N:38][CH:39]=[C:40]([S:42][C:43]3[CH:48]=[CH:47][CH:46]=[CH:45][N:44]=3)[CH:41]=2)=[CH:33][CH:32]=[N:31]1)[CH3:29]>CCOC(C)=O.[OH-].[Na+]>[CH2:28]([N:30]1[C:34]([O:35][C:36]2[C:37]([NH:49][C:2]3[S:3][N:18]=[C:17]([C@H:15]4[C:14]([CH3:25])([CH3:26])[O:13][C:12]([CH3:11])([CH3:27])[O:16]4)[N:1]=3)=[N:38][CH:39]=[C:40]([S:42][C:43]3[CH:48]=[CH:47][CH:46]=[CH:45][N:44]=3)[CH:41]=2)=[CH:33][CH:32]=[N:31]1)[CH3:29]

参加物

7

反応物 4

HCID 1049PyridineHCID 10953423IsothiocyanatosodiumHCID 674860483-(1-ethyl-1H-pyrazol-5-yloxy)-5-(pyridin-2-ylthio)pyridin-2-amineHCID 86644154(R)-2,2,5,5-tetramethyl-N-(methylsulfonyloxy)-1,3-dioxolane-4-carbimidoyl chloride

生成物 1

HCID 68476855(S)-N-(3-(1-ethyl-1H-pyrazol-5-yloxy)-5-(pyridin-2-ylthio)pyridin-2-yl)-3-(2,2,5,5-tetramethyl-1,3-dioxolan-4-yl)-1,2,4-thiadiazol-5-amine収率 32%

試薬・触媒・溶媒 2

HCID 8857Ethyl Acetate溶媒2 回HCID 14798Sodium Hydroxide溶媒

反応条件

温度
60 °C

実験手順

To 30 mL of EtOAc was added sodium isothiocyanate (0.0970 g, 1.20 mmol), pyridine (0.195 ml, 2.39 mmol) and (R)-2,2,5,5-tetramethyl-N-(methylsulfonyloxy)-1,3-dioxolane-4-carbimidoyl chloride (0.342 g, 1.20 mmol). The reaction was heated to 60° C. for 15 minutes. To the mixture was added 3-(1-ethyl-1H-pyrazol-5-yloxy)-5-(pyridin-2-ylthio)pyridin-2-amine (0.250 g, 0.798 mmol) and the reaction was stirred overnight at 70° C. The reaction was cooled and diluted with 50 ml EtOAc and 50 ml 1N NaOH. The aqueous layer was extracted with EtOAc. The combined organic layers were dried over Na2SO4, filtered and concentrated in-vacuo. The residue was purified over silica gel (50% EtOAc/Hexanes) to afford (S)-N-(3-(1-ethyl-1H-pyrazol-5-yloxy)-5-(pyridin-2-ylthio)pyridin-2-yl)-3-(2,2,5,5-tetramethyl-1,3-dioxolan-4-yl)-1,2,4-thiadiazol-5-amine (0.134 g, 0.255 mmol, 32.0% yield).

後処理

  1. temperatureThe reaction was cooled
  2. extractionThe aqueous layer was extracted with EtOAc
  3. dry with materialThe combined organic layers were dried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated in-vacuo
  6. customThe residue was purified over silica gel (50% EtOAc/Hexanes)

出典と根拠

ORDレコード
ord-4ccdd3f3c7954743ab37a11eb0122563
出典データセット
uspto-grants-2014_10
特許番号
US08853409B2

反応ノート

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