Methanol → 3-oxo-3,4-dihydro-2H-benzo[1,4]thiazine-6-carboxylic acid {1-[2-(7-hydroxy-quinoxalin-2-yloxy)-ethyl]-piperidin-4-yl}-amide

HRID 1422779ノート

反応式

HRID 1422779 の反応式
B(Br)(Br)Br.C[O:6][C:7]1[CH:16]=[C:15]2[C:10]([N:11]=[CH:12][C:13]([O:17][CH2:18][CH2:19][N:20]3[CH2:25][CH2:24][CH:23]([NH:26][C:27]([C:29]4[CH:30]=[CH:31][C:32]5[S:37][CH2:36][C:35](=[O:38])[NH:34][C:33]=5[CH:39]=4)=[O:28])[CH2:22][CH2:21]3)=[N:14]2)=[CH:9][CH:8]=1.CO>ClCCl>[OH:6][C:7]1[CH:16]=[C:15]2[C:10]([N:11]=[CH:12][C:13]([O:17][CH2:18][CH2:19][N:20]3[CH2:25][CH2:24][CH:23]([NH:26][C:27]([C:29]4[CH:30]=[CH:31][C:32]5[S:37][CH2:36][C:35](=[O:38])[NH:34][C:33]=5[CH:39]=4)=[O:28])[CH2:22][CH2:21]3)=[N:14]2)=[CH:9][CH:8]=1

参加物

5

反応物 3

HCID 887MethanolHCID 25134Boron tribromideHCID 468520703-oxo-3,4-dihydro-2H-benzo[1,4]thiazine-6-carboxylic acid {1-[2-(7-methoxy-quinoxalin-2-yloxy)-ethyl]-piperidin-4-yl}-amide

生成物 1

HCID 1363794043-oxo-3,4-dihydro-2H-benzo[1,4]thiazine-6-carboxylic acid {1-[2-(7-hydroxy-quinoxalin-2-yloxy)-ethyl]-piperidin-4-yl}-amide

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒2 回

反応条件

温度
0 °C

実験手順

A solution of 1M boron tribromide in dichloromethane (2.93 mL, 2.93 mmol, 8.0 eq) is added at 0° C. to a stirred solution of 3-oxo-3,4-dihydro-2H-benzo[1,4]thiazine-6-carboxylic acid {1-[2-(7-methoxy-quinoxalin-2-yloxy)-ethyl]-piperidin-4-yl}-amide (190 mg, 0.37 mmol, 1.0 eq) in dichloromethane (2.5 mL). The reaction mixture is stirred at 0° C. for 30 minutes and then at 40° C. for 24 hours. The reaction mixture is cooled down to 0° C. before the addition of methanol (1 mL). Solvents are evaporated and the crude is taken in water (10 mL), the pH is adjusted to 10 by the addition of 1N sodium hydroxide aqueous solution and the resulting aqueous layer is extracted with dichloromethane (3×10 mL). The combined organic layers are dried over sodium sulfate, filtered and concentrated to give a residue that is purified by preparative HPLC to afford 3-oxo-3,4-dihydro-2H-benzo[1,4]thiazine-6-carboxylic acid {1-[2-(7-hydroxy-quinoxalin-2-yloxy)-ethyl]-piperidin-4-yl}-amide as a white lyophilizated powder (28 mg, 30% yield).

後処理

  1. waitat 40° C. for 24 hours
  2. customSolvents are evaporated
  3. additionthe pH is adjusted to 10 by the addition of 1N sodium hydroxide aqueous solution
  4. extractionthe resulting aqueous layer is extracted with dichloromethane (3×10 mL)
  5. dry with materialThe combined organic layers are dried over sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customto give a residue that
  9. customis purified by preparative HPLC

出典と根拠

ORDレコード
ord-61beed0ae4cd4686b1635d7cc3130020
出典データセット
uspto-grants-2015_01
特許番号
US08927542B2

反応ノート

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