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Tetrahydrofuran → Di-tert-butyl ([(4-{2-[2-(acetylamino)-5-bromo-1,3-thiazol-4-yl]ethyl}phenyl)amino]methylidene}biscarbamate

HRID 1246461
ノート
印刷プレビュー

反応式

HRID 1246461 の反応式
[C:1]([NH:4][C:5]1[S:6][CH:7]=[C:8]([CH2:10][CH2:11][C:12]2[CH:17]=[CH:16][C:15]([NH:18][CH:19]([NH:28][C:29](=[O:35])[O:30][C:31]([CH3:34])([CH3:33])[CH3:32])[NH:20][C:21](=[O:27])[O:22][C:23]([CH3:26])([CH3:25])[CH3:24])=[CH:14][CH:13]=2)[N:9]=1)(=[O:3])[CH3:2].O1CCCC1.[Br:41]N1C(=O)CCC1=O>CO>[C:1]([NH:4][C:5]1[S:6][C:7]([Br:41])=[C:8]([CH2:10][CH2:11][C:12]2[CH:13]=[CH:14][C:15]([NH:18][CH:19]([NH:20][C:21](=[O:27])[O:22][C:23]([CH3:24])([CH3:25])[CH3:26])[NH:28][C:29](=[O:35])[O:30][C:31]([CH3:34])([CH3:33])[CH3:32])=[CH:16][CH:17]=2)[N:9]=1)(=[O:3])[CH3:2]
参加物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 8028TetrahydrofuranHCID 67184N-bromobutanimideHCID 86595595Di-tert-butyl {[(4-{2-[2-(acetylamino)-1,3-thiazol-4-yl]ethyl}phenyl)amino]methylidene}biscarbamate

生成物 1

HCID 86595594Di-tert-butyl ([(4-{2-[2-(acetylamino)-5-bromo-1,3-thiazol-4-yl]ethyl}phenyl)amino]methylidene}biscarbamate収率 75.7%

試薬・触媒・溶媒 1

HCID 887
Methanol
溶媒

実験手順

Di-tert-butyl {[(4-{2-[2-(acetylamino)-1,3-thiazol-4-yl]ethyl}phenyl)amino]methylidene}biscarbamate (310 mg) prepared in a similar manner according to Step 5 of the following Production Example 18 was dissolved in methanol (6 ml) and tetrahydrofuran (3 ml) under nitrogen atmosphere. Then N-bromosuccinimide (164 mg) was added to the solution at 0° C. The reaction mixture was stirred at room temperature for 4 hours, and concentrated in vacuo. Chloroform and saturated sodium hydrogen carbonate solution were added to the residue. The organic layer was washed with water and saturated sodium chloride solution, dried over anhydrous magnesium sulfate, and concentrated in vacuo. The residue was purified by flash column chromatography over silica gel with n-hexane/ethyl acetate (2:1) as an eluent to give di-tert-butyl {[(4-{2-[2-(acetylamino)-5-bromo-1,3-thiazol-4-yl]ethyl}phenyl)amino]methylidene}biscarbamate (271.4 mg) as a colorless amorphous substance.

後処理

  1. concentrationconcentrated in vacuo
  2. additionChloroform and saturated sodium hydrogen carbonate solution were added to the residue
  3. washThe organic layer was washed with water and saturated sodium chloride solution
  4. dry with materialdried over anhydrous magnesium sulfate
  5. concentrationconcentrated in vacuo
  6. customThe residue was purified by flash column chromatography over silica gel with n-hexane/ethyl acetate (2:1) as an eluent

出典と根拠

ORDレコード
ord-1380c10296ec477cb8a20c09e21261f8
出典データセット
uspto-grants-2006_10
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07125901B2

反応ノート

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