3-Hydrazinopyridine → Methyl 2-[5-(3-chlorophenyl)-3-methyl-1-(pyridin-3-yl)pyrazol-4-yl]acetate

HRID 888723

反応式

HRID 888723 の反応式
[NH:1]([C:3]1[CH:4]=[N:5][CH:6]=[CH:7][CH:8]=1)[NH2:2].[Cl:9][C:10]1[CH:11]=[C:12]([CH:24]=[CH:25][CH:26]=1)[C:13]([CH:15]([C:21](=O)[CH3:22])[CH2:16][C:17]([O:19][CH3:20])=[O:18])=O>C(O)C>[Cl:9][C:10]1[CH:11]=[C:12]([C:13]2[N:1]([C:3]3[CH:4]=[N:5][CH:6]=[CH:7][CH:8]=3)[N:2]=[C:21]([CH3:22])[C:15]=2[CH2:16][C:17]([O:19][CH3:20])=[O:18])[CH:24]=[CH:25][CH:26]=1

参加物

4

反応条件

温度
130 °C

実験手順

0.577 g (4.233 mmol) of 3-hydrazinopyridine in 5.00 ml of ethanol was added to 0.650 g (2.419 mmol) of methyl 3-(3-chlorobenzoyl)-4-oxopentanoate, and the mixture was stirred in a closed vessel in a microwave oven at 130° C. for 1.5 h. The solvent was removed under reduced pressure, and the residue was taken up in dichloromethane and washed twice with in each case 25 ml of water. The combined organic phases were dried over sodium sulfate, and the solvent was removed under reduced pressure. Chromatography of the residue gave 0.364 g (42% of theory) of a light-yellow oil. 1H-NMR (CDCl3): see Table 2.

後処理

  1. customThe solvent was removed under reduced pressure
  2. washwashed twice with in each case 25 ml of water
  3. dry with materialThe combined organic phases were dried over sodium sulfate
  4. customthe solvent was removed under reduced pressure
  5. customChromatography of the residue gave 0.364 g (42% of theory) of a light-yellow oil

出典と根拠

ORDレコード
ord-76739736b14c447e83fa235c27e92d13
出典データセット
uspto-grants-2012_08
特許番号
US08252723B2

関連ノート

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