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N-bromobutanimide → (S)-tert-butyl (1-((9-bromo-2,6-dimethyl-5-oxo-5,6-dihydrobenzo[c][2,7]naphthyridin-8-yl)oxy)-4-methylpentan-2-yl)carbamate

HRID 1398429
ノート
印刷プレビュー

反応式

HRID 1398429 の反応式
[CH3:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][N:11]=1)[C:8](=[O:12])[N:7]([CH3:13])[C:6]1[CH:14]=[C:15]([O:18][CH2:19][C@@H:20]([NH:25][C:26](=[O:32])[O:27][C:28]([CH3:31])([CH3:30])[CH3:29])[CH2:21][CH:22]([CH3:24])[CH3:23])[CH:16]=[CH:17][C:5]2=1.C1C(=O)N([Br:40])C(=O)C1>C(#N)C.O>[Br:40][C:16]1[C:15]([O:18][CH2:19][C@@H:20]([NH:25][C:26](=[O:32])[O:27][C:28]([CH3:30])([CH3:29])[CH3:31])[CH2:21][CH:22]([CH3:24])[CH3:23])=[CH:14][C:6]2[N:7]([CH3:13])[C:8](=[O:12])[C:9]3[C:4]([C:5]=2[CH:17]=1)=[CH:3][C:2]([CH3:1])=[N:11][CH:10]=3
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 2

HCID 67184N-bromobutanimideHCID 86710415(S)-tert-butyl (1-((2,6-dimethyl-5-oxo-5,6-dihydrobenzo[c][2,7]naphthyridin-8-yl)oxy)-4-methylpentan-2-yl)carbamate

生成物 1

HCID 86710416(S)-tert-butyl (1-((9-bromo-2,6-dimethyl-5-oxo-5,6-dihydrobenzo[c][2,7]naphthyridin-8-yl)oxy)-4-methylpentan-2-yl)carbamate収率 39.1%

試薬・触媒・溶媒 2

HCID 962Water溶媒
HCID 6342
Acetonitrile
溶媒

実験手順

To the stirred solution of (S)-tert-butyl (1-((2,6-dimethyl-5-oxo-5,6 dihydrobenzo[c][2,7]naphthyridin-8-yl)oxy)-4-methylpentan-2-yl)carbamate (40 mg, 0.069 mmol) in acetonitrile (3 mL) at room temperature was added NBS (12 mg, 0.069 mmol). The reaction mixture was heated to reflux for 2 h. The reaction mixture was diluted with water (50 mL) and extracted with dichloromethane (100 mL). The organic layer was separated, dried over Na2SO4 and concentrated under reduced pressure to afford (S)-tert-butyl (1-((9-bromo-2,6-dimethyl-5-oxo-5,6-dihydrobenzo[c][2,7]naphthyridin-8-yl)oxy)-4-methylpentan-2-yl)carbamate (30 mg, 0.027 mmol, 40% crude yield) as a yellow oil. The material was carried forward without further purification. LC/MS (ESI) m/e 518.2 [(M+H)+, calcd for C25H33BrN3O4 518.2]; LC/MS retention time (method E): tR=1.25 min.

後処理

  1. temperatureThe reaction mixture was heated
  2. temperatureto reflux for 2 h
  3. extractionextracted with dichloromethane (100 mL)
  4. customThe organic layer was separated
  5. dry with materialdried over Na2SO4
  6. concentrationconcentrated under reduced pressure

出典と根拠

ORDレコード
ord-8f26966905a64b7d8251c88ebf120cd7
出典データセット
uspto-grants-2014_12
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08901305B2

反応ノート

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