Water → t-Butyl 4-[1-(2-butynyl)-7-oxo-6,7-dihydro-1H-imidazo[4,5-d]pyridazin-2-yl]piperazine-1-carboxylate

HRID 1351078ノート

反応式

HRID 1351078 の反応式
Br[C:2]1[N:3]([CH2:12][C:13]#[C:14][CH3:15])[C:4]2[C:9](=[O:10])[NH:8][N:7]=[CH:6][C:5]=2[N:11]=1.C(=O)([O-])[O-].[K+].[K+].[C:22]([O:26][C:27]([N:29]1[CH2:34][CH2:33][NH:32][CH2:31][CH2:30]1)=[O:28])([CH3:25])([CH3:24])[CH3:23].O>CN(C)C=O>[C:22]([O:26][C:27]([N:29]1[CH2:34][CH2:33][N:32]([C:2]2[N:3]([CH2:12][C:13]#[C:14][CH3:15])[C:4]3[C:9](=[O:10])[NH:8][N:7]=[CH:6][C:5]=3[N:11]=2)[CH2:31][CH2:30]1)=[O:28])([CH3:25])([CH3:23])[CH3:24]

参加物

6

反応物 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 143452tert-Butyl piperazine-1-carboxylateHCID 219476582-Bromo-3-(but-2-ynyl)-3,5-dihydro-imidazo[4,5-d]pyridazin-4-one

生成物 1

HCID 21098100t-Butyl 4-[1-(2-butynyl)-7-oxo-6,7-dihydro-1H-imidazo[4,5-d]pyridazin-2-yl]piperazine-1-carboxylate

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

反応条件

温度
80 °C

実験手順

A mixture of 2.11 g of 2-bromo-3-(2-butyn-1-yl)-3,5-dihydro-imidazo[4,5-d]pyridazin-4-one, 1.64 g potassium carbonate and 1.91 g 1-tert.-butyloxycarbonyl-piperazine in 20 ml N,N-dimethylformamide is stirred for six hours at 80° C. After cooling to ambient temperature the reaction mixture is combined with water and the precipitate formed is suction filtered. The crude product is purified by chromatography over a silica gel column with methylene chloride/methanol (95:5 to 90:10).

後処理

  1. temperatureAfter cooling to ambient temperature the reaction mixture
  2. customthe precipitate formed
  3. filtrationfiltered
  4. customThe crude product is purified by chromatography over a silica gel column with methylene chloride/methanol (95:5 to 90:10)

出典と根拠

ORDレコード
ord-f5ee32ff804e47448d864314888c0ce2
出典データセット
uspto-grants-2007_05
特許番号
US07217711B2

反応ノート

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