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Sodium triacetoxyborohydride → 7-{4-[4-(2-Trifluoromethyl-3H-benzoimidazol-4-yl)-piperazin-1-yl]-butoxy}-3,4-dihydro-1H-[1,8]naphthyridin-2-one

HRID 1373640
ノート
印刷プレビュー

反応式

HRID 1373640 の反応式
[O:1]=[C:2]1[NH:11][C:10]2[N:9]=[C:8]([O:12][CH2:13][CH2:14][CH2:15][CH:16]=O)[CH:7]=[CH:6][C:5]=2[CH2:4][CH2:3]1.[N:18]1([C:24]2[C:32]3[N:31]=[C:30]([C:33]([F:36])([F:35])[F:34])[NH:29][C:28]=3[CH:27]=[CH:26][CH:25]=2)[CH2:23][CH2:22][NH:21][CH2:20][CH2:19]1.[BH-](OC(C)=O)(OC(C)=O)OC(C)=O.[Na+]>ClC(Cl)C.C(OCC)(=O)C>[F:36][C:33]([F:34])([F:35])[C:30]1[NH:31][C:32]2[C:24]([N:18]3[CH2:19][CH2:20][N:21]([CH2:16][CH2:15][CH2:14][CH2:13][O:12][C:8]4[N:9]=[C:10]5[C:5]([CH2:4][CH2:3][C:2](=[O:1])[NH:11]5)=[CH:6][CH:7]=4)[CH2:22][CH2:23]3)=[CH:25][CH:26]=[CH:27][C:28]=2[N:29]=1
参加物実験手順後処理出典と根拠反応ノート

参加物

6

反応物 3

HCID 5049666Sodium triacetoxyborohydrideHCID 184141074-(piperazin-1-yl)-2-(trifluoromethyl)-1H-benzo[d]imidazoleHCID 210733774-((7-Oxo-5,6,7,8-tetrahydro-1,8-naphthyridin-2-yl)oxy)butanal

生成物 1

HCID 1785156567-{4-[4-(2-Trifluoromethyl-3H-benzoimidazol-4-yl)-piperazin-1-yl]-butoxy}-3,4-dihydro-1H-[1,8]naphthyridin-2-one収率 35.7%

試薬・触媒・溶媒 2

HCID 6365
1,1-Dichloroethane
溶媒
HCID 8857Ethyl Acetate溶媒

実験手順

To a suspension of 4-(7-oxo-5,6,7,8-tetrahydro-[1,8]-naphthyridin-2-yloxy)-butyraldehyde (0.297 g, 1.266 mmol, 1.32 eq) and 4-piperazin-1-yl-2-trifluoromethyl-1H-benzoimidazole (0.258 g, 0.953 mmol, 1 eq) in dichloroethane (5 mL) was added NaBH(OAc)3 (0.723 g, 3.413 mmol, 3.58 eq). The slurry was allowed to stir overnight at room temperature (18 h). Analysis by HPLC showed reaction mostly complete. The mixture was diluted with Ethyl Acetate and quenched with saturated NaHCO3. The organic phase was then washed with brine, dried over Na2SO4, filtered and evaporated in vacuo. Purification by silica gel chromatography (2% MeOH/CH2Cl2) followed by formation of the HCl salt using 1N HCl in ether provided the title compound (0.166 g, 35%). MS: APCI: M+1: 489.2 (Exact Mass: 488.21).

後処理

  1. customreaction mostly complete
  2. customquenched with saturated NaHCO3
  3. washThe organic phase was then washed with brine
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. customevaporated in vacuo
  7. customPurification by silica gel chromatography (2% MeOH/CH2Cl2)

出典と根拠

ORDレコード
ord-b201846427c347308ae82dd464ff81bd
出典データセット
uspto-grants-2007_01
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07160888B2

反応ノート

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