Potassium Carbonate → HCID 21097257、化合物

HRID 1350729ノート

反応式

HRID 1350729 の反応式
[CH2:1]([N:8]1[CH2:13][CH2:12][NH:11][CH2:10][CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.I.[CH3:15][NH:16][C:17](=[NH:20])SC.Br[C:22](=[CH:25][O:26]C(C)C)[CH:23]=O.C([O-])([O-])=O.[K+].[K+].C1OCCOCCOCCOCCOCCOC1>CC#N>[CH2:1]([N:8]1[CH2:13][CH2:12][N:11]([C:17]2[N:16]([CH3:15])[C:22]([CH:25]=[O:26])=[CH:23][N:20]=2)[CH2:10][CH2:9]1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

参加物

7

反応物 5

HCID 11430Potassium CarbonateHCID 2855718-Crown-6HCID 759941-BenzylpiperazineHCID 534166342-Bromo-3-isopropoxy-propenalHCID 178485204HCID 178485204、化合物

生成物 1

HCID 21097257HCID 21097257、化合物収率 17.6%

試薬・触媒・溶媒 1

HCID 6342Acetonitrile溶媒

実験手順

To 15 mL of MeCN was added 880 mg (4.99 mmol) of N-benzyl-piperazine and 1.16 g (5.00 mmol) of 1,2-dimethyl-isothiourea hydroiodide. The mixture was heated at reflux overnight. Then, 970 mg (5.02 mmol) of 2-bromo-3-isopropoxy-propenal and 2.07 g (15.0 mmol) of K2CO3, and 250 mg of 18-crown-6 were added and the mixture was heated to reflux overnight. The mixture was cooled, concentrated, and dissolved in EtOAc with a small amount of water to dissolve salts. The aqueous phase was extracted twice with EtOAc, and the combined the organics were washed with water and brine, dried over MgSO4, concentrated, and chromatographed to provide 250 mg of 2-(4-benzyl-piperazin-1-yl)-3-methyl-3H-imidazole-4-carbaldehyde and 2-(4-benzyl-piperazin-1-yl)-1-methyl-1H-imidazole-4-carbaldehyde as a 1:1 mixture of isomers.

後処理

  1. temperatureThe mixture was heated
  2. temperatureat reflux overnight
  3. temperaturethe mixture was heated
  4. temperatureto reflux overnight
  5. temperatureThe mixture was cooled
  6. concentrationconcentrated
  7. dissolutiondissolved in EtOAc with a small amount of water
  8. dissolutionto dissolve salts
  9. extractionThe aqueous phase was extracted twice with EtOAc
  10. washorganics were washed with water and brine
  11. dry with materialdried over MgSO4
  12. concentrationconcentrated
  13. customchromatographed

出典と根拠

ORDレコード
ord-2dc4b27c706943cd9ed02134bd73a6c3
出典データセット
uspto-grants-2007_05
特許番号
US07214802B2

反応ノート

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