Ethyl Acetate → 5-Bromo-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-indazole-7-carbaldehyde

HRID 913841ノート

反応式

HRID 913841 の反応式
[Br:1][C:2]1[CH:3]=[C:4]2[C:8](=[C:9]([CH2:11][OH:12])[CH:10]=1)[N:7]([CH2:13][O:14][CH2:15][CH2:16][Si:17]([CH3:20])([CH3:19])[CH3:18])[N:6]=[CH:5]2.C[N+]1([O-])CCOCC1.CCOC(C)=O>ClCCl.[Ru]([O-])(=O)(=O)=O.C([N+](CCC)(CCC)CCC)CC>[Br:1][C:2]1[CH:3]=[C:4]2[C:8](=[C:9]([CH:11]=[O:12])[CH:10]=1)[N:7]([CH2:13][O:14][CH2:15][CH2:16][Si:17]([CH3:20])([CH3:19])[CH3:18])[N:6]=[CH:5]2

参加物

6

反応物 3

HCID 8857Ethyl AcetateHCID 82029Methyl morpholine oxideHCID 57546160(5-Bromo-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-indazol-7-yl)methanol

生成物 1

HCID 575460835-Bromo-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-indazole-7-carbaldehyde

試薬・触媒・溶媒 2

HCID 178419074HCID 178419074、化合物触媒HCID 6344Dichloromethane溶媒

実験手順

To a suspension of (5-bromo-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-indazol-7-yl)methanol (675 mg, 1.889 mmol), 4-methylmorpholine 4-oxide (443 mg, 3.78 mmol), and molecular sieves (337 mg, 1.889 mmol) in dichloromethane (10 mL) at room temperature was added tetrapropylammonium perruthenate (19.9 mg, 0.057 mmol). After 1.5 h, the crude reaction mixture was loaded directly onto a pre-conditioned column of silica gel (silica gel/dichloromethane). The solvent was then switched directly to 12% EtOAc/Hex and the column run in that solvent system to give 565 mg (84%) as a colorless oil. 1H-NMR (CDCl3, 500 MHz) δ 10.31 (s, 1H), 8.11 (d, J=1.8, 1H), 8.05 (s, 1H), 8.03 (d, J=1.8, 1H), 6.04 (s, 2H), 3.45 (m, 2H), 0.81 (m, 2H), −0.12 (s, 9H); 13C NMR (126 MHz, CDCl3) δ ppm 188.9, 135.4, 135.0, 134.2, 130.0, 129.3, 123.0, 114.0, 81.2, 66.4, 17.8, −1.4.

後処理

  1. customthe crude reaction mixture
  2. customto give 565 mg (84%) as a colorless oil

出典と根拠

ORDレコード
ord-3db3af3199d642f19db7ee281b8957e1
出典データセット
uspto-grants-2011_09
特許番号
US08026257B2

反応ノート

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