Dimethylformamide → tert-Butyl 7-cyano-1,2,4,5-tetrahydro-3H-benzo[d]azepine-3-carboxylate

HRID 33199ノート

反応式

HRID 33199 の反応式
[C:1]([O:5][C:6]([N:8]1[CH2:14][CH2:13][C:12]2[CH:15]=[CH:16][C:17](OS(C(F)(F)F)(=O)=O)=[CH:18][C:11]=2[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH3:27][N:28](C)C=O>C(OCC)(=O)C.[C-]#N.[Zn+2].[C-]#N>[C:1]([O:5][C:6]([N:8]1[CH2:14][CH2:13][C:12]2[CH:15]=[CH:16][C:17]([C:27]#[N:28])=[CH:18][C:11]=2[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

参加物

5

反応物 2

HCID 6228DimethylformamideHCID 181732813-(tert-butoxycarbonyl)-7-trifluoromethylsulfonyloxy-2,3,4,5-tetrahydro-1H-3-benzazepine

生成物 1

HCID 18173275tert-Butyl 7-cyano-1,2,4,5-tetrahydro-3H-benzo[d]azepine-3-carboxylate収率 23%

試薬・触媒・溶媒 2

HCID 11186Zinc cyanide (Zn(CN)2)触媒HCID 8857Ethyl Acetate溶媒

実験手順

A mixture of 3-(tert-butyloxycarbonyl)-7-trifluoromethylsulfonyloxy-2,3,4,5-tetrahydro-1H-3-benzazepine (4.78 g, 12.1 mmol), zinc cyanide (1.42 g, 15.6 mmol) and tetrakis-triphenylphosphine palladium (0) (1.4 g, 1.2 mmol, 10 mol %), in dry dimethylformamide (50 ml) was stirred at 100° C. for 3 h under argon. After cooling to room temperature the reaction mixture was diluted with ethyl acetate (120 ml) and filtered. The filtrate was washed with saturated aqueous sodium bicarbonate (100 ml), then water (2×50 ml), then brine (50 ml). The organic layer was dried over sodium sulfate and evaporated in vacuo to give brown oil, which was purified by chromatography on silica gel with 20-100% ethyl acetate—hexane elution to give the title compound (0.765 g, 23%) as a brown oil.

後処理

  1. filtrationfiltered
  2. washThe filtrate was washed with saturated aqueous sodium bicarbonate (100 ml)
  3. dry with materialThe organic layer was dried over sodium sulfate
  4. customevaporated in vacuo
  5. customto give brown oil, which
  6. customwas purified by chromatography on silica gel with 20-100% ethyl acetate—hexane elution

出典と根拠

ORDレコード
ord-80acd03965e04733a86ece3b6b9d8861
出典データセット
uspto-grants-2008_09
特許番号
US07429579B2

反応ノート

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