1-Bromopropane → Itraconazole Impurity 8

HRID 1154743ノート

反応式

HRID 1154743 の反応式
[CH3:1][O:2][C:3]1[CH:8]=[CH:7][C:6]([N:9]2[CH2:14][CH2:13][N:12]([C:15]3[CH:20]=[CH:19][C:18]([N:21]4[CH:25]=[N:24][NH:23][C:22]4=[O:26])=[CH:17][CH:16]=3)[CH2:11][CH2:10]2)=[CH:5][CH:4]=1.[H-].[Na+].Br[CH2:30][CH2:31][CH3:32]>CS(C)=O>[CH3:1][O:2][C:3]1[CH:8]=[CH:7][C:6]([N:9]2[CH2:10][CH2:11][N:12]([C:15]3[CH:20]=[CH:19][C:18]([N:21]4[CH:25]=[N:24][N:23]([CH2:30][CH2:31][CH3:32])[C:22]4=[O:26])=[CH:17][CH:16]=3)[CH2:13][CH2:14]2)=[CH:5][CH:4]=1

参加物

5

反応物 3

HCID 78401-BromopropaneHCID 24758Sodium hydrideHCID 42465972,4-Dihydro-4-(4-(4-(4-methoxyphenyl)piperazin-1-yl)phenyl)-3H-1,2,4-triazol-3-one

生成物 1

HCID 13368248Itraconazole Impurity 8収率 65%

試薬・触媒・溶媒 1

HCID 679Dimethyl Sulfoxide溶媒

反応条件

温度
50 °C

実験手順

10 Parts of 2,4-dihydro-4-{4-[4-(4-methoxyphenyl)-1-piperazinyl]phenyl}-3H-1,2,4-triazol-3-one are dissolved in 300 parts of dimethyl sulfoxide at 100° C. Then there are added 1.6 parts of sodium hydride dispersion 50% and stirring is continued while the mixture is allowed to cool to about 50° C. 3.9 Parts of 1-bromopropane are added and the whole is stirred overnight at room temperature. The reaction mixture is poured onto water and the product is extracted with trichloromethane. The extract is washed with water, dried, filtered and evaporated. The residue is purified by column-chromatography over silica gel using a mixture of trichloromethane and methanol (98:2 by volume) as eluent. The pure fractions are collected and the eluent is evaporated. The residue is triturated in 2-propanol. The product is filtered off and dried; yielding 7.5 parts (65%) of 2,4-dihydro-4-{4-[4-(4-methoxyphenyl)-1-piperazinyl]phenyl}-2-propyl-3H-1,2,4 -triazol-3-one.

後処理

  1. stirringthe whole is stirred overnight at room temperature
  2. additionThe reaction mixture is poured onto water
  3. extractionthe product is extracted with trichloromethane
  4. washThe extract is washed with water
  5. customdried
  6. filtrationfiltered
  7. customevaporated
  8. customThe residue is purified by column-chromatography over silica gel using
  9. additiona mixture of trichloromethane and methanol (98:2 by volume) as eluent
  10. customThe pure fractions are collected
  11. customthe eluent is evaporated
  12. customThe residue is triturated in 2-propanol
  13. filtrationThe product is filtered off
  14. customdried

出典と根拠

ORDレコード
ord-3892382c06fd4adea71bfc5a35e96fe7
出典データセット
uspto-grants-1984_12
特許番号
US04490530

反応ノート

読み込み中…