Lithium Hexamethyldisilazide → 6-(N-(5-bromopyridin-2-yl)methylsulfonamido)-5-cyclopropyl-2-(4-fluorophenyl)-N-methylbenzofuran-3-carboxamide

HRID 1424814ノート

反応式

HRID 1424814 の反応式
[CH:1]1([C:4]2[C:5]([NH:24][S:25]([CH3:28])(=[O:27])=[O:26])=[CH:6][C:7]3[O:11][C:10]([C:12]4[CH:17]=[CH:16][C:15]([F:18])=[CH:14][CH:13]=4)=[C:9]([C:19]([NH:21][CH3:22])=[O:20])[C:8]=3[CH:23]=2)[CH2:3][CH2:2]1.C[Si]([N-][Si](C)(C)C)(C)C.[Li+].[Br:39][C:40]1[CH:41]=[CH:42][C:43](F)=[N:44][CH:45]=1>CN(C)C=O.O>[Br:39][C:40]1[CH:41]=[CH:42][C:43]([N:24]([C:5]2[C:4]([CH:1]3[CH2:3][CH2:2]3)=[CH:23][C:8]3[C:9]([C:19]([NH:21][CH3:22])=[O:20])=[C:10]([C:12]4[CH:17]=[CH:16][C:15]([F:18])=[CH:14][CH:13]=4)[O:11][C:7]=3[CH:6]=2)[S:25]([CH3:28])(=[O:27])=[O:26])=[N:44][CH:45]=1

参加物

6

反応物 3

HCID 2733832Lithium HexamethyldisilazideHCID 27831685-Bromo-2-fluoropyridineHCID 160735125-cyclopropyl-2-(4-fluorophenyl)-N-methyl-6-(methylsulfonamido)benzofuran-3-carboxamide

生成物 1

HCID 1317322756-(N-(5-bromopyridin-2-yl)methylsulfonamido)-5-cyclopropyl-2-(4-fluorophenyl)-N-methylbenzofuran-3-carboxamide収率 77.5%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 6228Dimethylformamide溶媒

反応条件

温度
80 °C

実験手順

To a solution of 5-cyclopropyl-2-(4-fluorophenyl)-N-methyl-6-[(methylsulfonyl)amino]-1-benzofuran-3-carboxamide (400 mg, 1.00 mmol) in dimethylformamide (5 mL) at 0° C. was added lithium bis(trimethylsilyl)amide (1.5 mL, 1.50 mmol). After 1 hour 5-bromo-2-fluoropyridine (350 mg, 2.00 mmol) was added and stirring was maintained at 80° C. for 16 hours. The solution was cooled to room temperature, diluted with water, and extracted with ethyl acetate (3×50 mL). The combined extracts were washed with brine, dried over sodium sulfate and concentrated to dryness at reduced pressure. The crude material was purified by column chromatography to afford 6-(N-(5-bromopyridin-2-yl)methylsulfonamido)-5-cyclopropyl-2-(4-fluorophenyl)-N-methylbenzofuran-3-carboxamide (430 mg, 0.775 mmol, 77.5% yield) as a yellow solid. LCMS (m/z, ES+)=559 (M+H+).

後処理

  1. temperatureThe solution was cooled to room temperature
  2. extractionextracted with ethyl acetate (3×50 mL)
  3. washThe combined extracts were washed with brine
  4. dry with materialdried over sodium sulfate
  5. concentrationconcentrated to dryness at reduced pressure
  6. customThe crude material was purified by column chromatography

出典と根拠

ORDレコード
ord-7f92b803333b49a2a0ce70d7968ef275
出典データセット
uspto-grants-2015_01
特許番号
US08927593B2

反応ノート

読み込み中…