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Methanol → 2-(4-(benzo[d]thiazol-2-ylcarbamoyl)-3,4-dihydro-2H-benzo[b][1,4]oxazin-6-yl)-5-(methyl(2-phenoxyethyl)amino)thiazole-4-carboxylic acid

HRID 1896572
ノート
印刷プレビュー

反応式

HRID 1896572 の反応式
[S:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[C:2]1[NH:10][C:11]([N:13]1[CH2:18][CH2:17][O:16][C:15]2[CH:19]=[CH:20][C:21]([C:23]3[S:24][C:25]([N:33]([CH3:43])[CH2:34][CH2:35][O:36][C:37]4[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=4)=[C:26]([C:28]([O:30]CC)=[O:29])[N:27]=3)=[CH:22][C:14]1=2)=[O:12].[OH-].[K+].CO>O>[S:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[C:2]1[NH:10][C:11]([N:13]1[CH2:18][CH2:17][O:16][C:15]2[CH:19]=[CH:20][C:21]([C:23]3[S:24][C:25]([N:33]([CH3:43])[CH2:34][CH2:35][O:36][C:37]4[CH:38]=[CH:39][CH:40]=[CH:41][CH:42]=4)=[C:26]([C:28]([OH:30])=[O:29])[N:27]=3)=[CH:22][C:14]1=2)=[O:12]
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

5

反応物 3

HCID 887MethanolHCID 14797Potassium HydroxideHCID 59418665ethyl 2-(4-(benzo[d]thiazol-2-ylcarbamoyl)-3,4-dihydro-2H-benzo[b][1,4]oxazin-6-yl)-5-(methyl(2-phenoxyethyl)amino)thiazole-4-carboxylate

生成物 1

HCID 468407892-(4-(benzo[d]thiazol-2-ylcarbamoyl)-3,4-dihydro-2H-benzo[b][1,4]oxazin-6-yl)-5-(methyl(2-phenoxyethyl)amino)thiazole-4-carboxylic acid収率 8%

試薬・触媒・溶媒 1

HCID 962
Water
溶媒

反応条件

温度
55 °C

実験手順

The title compound 2-(4-(benzo[d]thiazol-2-ylcarbamoyl)-3,4-dihydro-2H-benzo[b][1,4]oxazin-6-yl)-5-(methyl(2-phenoxyethyl)amino)thiazole-4-carboxylic acid (20) was prepared by the following procedure: To ethyl 2-(4-(benzo[d]thiazol-2-ylcarbamoyl)-3,4-dihydro-2H-benzo[b][1,4]oxazin-6-yl)-5-(methyl(2-phenoxyethyl)amino)thiazole-4-carboxylate (20C) (0.210 g, 0.34 mmol) and KOH (0.1 g, 1.8 mmol) was added MeOH (2 mL) and water (5 mL). The reaction mixture was allowed to heat to 55° C. and stirred 24 hours. The reaction was monitored by LCMS. To the reaction mixture was added (0.1 g, 1.8 mmol). The reaction mixture was allowed to heat to 55° C. and stirred for 24 hours. The reaction mixture was cooled to rt and concentrated under reduced pressure. To the crude residue was added EtOAc and water. The layers were separated and extracted with EtOAc and the combined organic extracts were washed sequentially with water, brine, dried over MgSO4, filtered, and concentrated under reduced pressure. The crude residue was purified by reverse phase HPLC to provide 0.015 g (8%) of the desired product 2-(4-(benzo[d]thiazol-2-ylcarbamoyl)-3,4-dihydro-2H-benzo[b][1,4]oxazin-6-yl)-5-(methyl(2-phenoxyethyl)amino)thiazole-4-carboxylic acid (20): LC/MS (APCI): m/z 588.1 (M+H).

後処理

  1. customThe title compound 2-(4-(benzo[d]thiazol-2-ylcarbamoyl)-3,4-dihydro-2H-benzo[b][1,4]oxazin-6-yl)-5-(methyl(2-phenoxyethyl)amino)thiazole-4-carboxylic acid (20) was prepared by the following procedure
  2. additionTo the reaction mixture was added (0.1 g, 1.8 mmol)
  3. temperatureto heat to 55° C.
  4. stirringstirred for 24 hours
  5. temperatureThe reaction mixture was cooled to rt
  6. concentrationconcentrated under reduced pressure
  7. additionTo the crude residue was added EtOAc and water
  8. customThe layers were separated
  9. extractionextracted with EtOAc
  10. washthe combined organic extracts were washed sequentially with water, brine
  11. dry with materialdried over MgSO4
  12. filtrationfiltered
  13. concentrationconcentrated under reduced pressure
  14. customThe crude residue was purified by reverse phase HPLC

出典と根拠

ORDレコード
ord-62bb903e2cf540a6a54147cf734def8e
出典データセット
uspto-grants-2013_08
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08518970B2

反応ノート

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このページの内容参加物反応条件実験手順後処理出典と根拠反応ノート