1-Methylpiperazine → Ethyl 8-(4-methylpiperazin-1-yl)-4H-quinolizin-4-one-3-carboxylate

HRID 1847

反応式

HRID 1847 の反応式
Cl[C:2]1[CH:3]=[CH:4][N:5]2[C:10]([CH:11]=1)=[CH:9][CH:8]=[C:7]([C:12]([O:14][CH2:15][CH3:16])=[O:13])[C:6]2=[O:17].[CH3:18][N:19]1[CH2:24][CH2:23][NH:22][CH2:21][CH2:20]1>N1C=CC=CC=1>[CH3:18][N:19]1[CH2:24][CH2:23][N:22]([C:2]2[CH:3]=[CH:4][N:5]3[C:10]([CH:11]=2)=[CH:9][CH:8]=[C:7]([C:12]([O:14][CH2:15][CH3:16])=[O:13])[C:6]3=[O:17])[CH2:21][CH2:20]1

参加物

4

反応物 2

HCID 531671-MethylpiperazineHCID 3314858Ethyl 8-chloro-4-oxo-4H-quinolizine-3-carboxylate2 回

生成物 1

HCID 15389003Ethyl 8-(4-methylpiperazin-1-yl)-4H-quinolizin-4-one-3-carboxylate収率 106.8%

試薬・触媒・溶媒 1

HCID 1049Pyridine溶媒

反応条件

温度
70 °C

実験手順

Ethyl 8-chloro-4H-quinolizin-4-one-3-carboxylate (755 mg, 3.0 mmol), the product of Step 3 of Example 58, was suspended in 12 mL of dry pyridine under a nitrogen atmosphere. To the resultant solution was added 6.0 mL (6.0 mmol) of N-methylpiperazine and the reaction mixture was heated at 70° C. for 8 hours. The reaction mixture was then concentrated in vacuo in order to remove all of the pyridine. The dry residue (3.124 g) was dissolved in 125 mL of methylene chloride and the methylene chloride solution was washed with 125 mL of saturated sodium chloride solution (brine). The aqueous layer was extracted with 125 mL of methylene chloride and the combined methylene chloride solutions were dried over anhydrous sodium sulfate, filtered and concentrated and dried in vacuo to afford 1.01 g of the title compound.

後処理

  1. concentrationThe reaction mixture was then concentrated in vacuo in order
  2. customto remove all of the pyridine
  3. dissolutionThe dry residue (3.124 g) was dissolved in 125 mL of methylene chloride
  4. washthe methylene chloride solution was washed with 125 mL of saturated sodium chloride solution (brine)
  5. extractionThe aqueous layer was extracted with 125 mL of methylene chloride
  6. dry with materialthe combined methylene chloride solutions were dried over anhydrous sodium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated
  9. customdried in vacuo

出典と根拠

ORDレコード
ord-d1417262cbeb4dcfb27be135b8b405b2
出典データセット
uspto-grants-1998_03
特許番号
US05726182

関連ノート

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