Triethyl borate → 3-[(tert-Butoxycarbonyl)amino]-2-(methylsulfanyl)pyrazolo[1,5-a]pyridin-7-ylboric Acid

HRID 9196

反応式

HRID 9196 の反応式
I[C:2]1[N:7]2[N:8]=[C:9]([S:19][CH3:20])[C:10]([NH:11][C:12](=[O:18])[O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[C:6]2[CH:5]=[CH:4][CH:3]=1.C([Li])CCC.C([O:28][B:29]([O:33]CC)[O:30]CC)C.[Cl-].[NH4+]>O1CCCC1.C(OCC)(=O)C>[C:14]([O:13][C:12]([NH:11][C:10]1[C:9]([S:19][CH3:20])=[N:8][N:7]2[C:2]([O:28][B:29]([OH:33])[OH:30])=[CH:3][CH:4]=[CH:5][C:6]=12)=[O:18])([CH3:17])([CH3:16])[CH3:15]

参加物

7

反応条件

温度
-78 °C

実験手順

After dissolving tert-butyl N-(7-iodo-2-(methylsulfanyl)pyrazolo[1,5-a]pyridin-3-yl)carbamate (200 mg) in tetrahydrofuran (2 mL), the mixture was cooled to −78° C. and n-butyllithium (1.6 M; 0.66 mL) was added dropwise. The mixture was stirred for 1-hour at the same temperature, triethoxyborane (109 μL) was added and the temperature was increased to room temperature. Saturated aqueous ammonium chloride was added to the obtained reaction mixture, and extraction was performed with ethyl acetate. The obtained organic layer was washed with brine and dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure to obtain the title compound (106 mg) as grayish white crystals.

後処理

  1. additionwas added
  2. temperaturethe temperature was increased to room temperature
  3. washThe obtained organic layer was washed with brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. distillationthe solvent was distilled off under reduced pressure

出典と根拠

ORDレコード
ord-f6b1679482d14db0b11eddb742d1b067
出典データセット
uspto-grants-2006_08
特許番号
US07091215B2

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