Water → 5-[(2-Methylindolizin-3-yl)carbonyl]-4,5,6,7-tetrahydrobenzimidazole

HRID 2225615ノート

反応式

HRID 2225615 の反応式
Cl.[N:2]1[C:6]2[CH2:7][CH2:8][CH:9]([C:11](N3CCCC3)=[O:12])[CH2:10][C:5]=2[NH:4][CH:3]=1.[CH3:18][C:19]1[CH:20]=[C:21]2[N:26]([CH:27]=1)[CH:25]=[CH:24][CH:23]=[CH:22]2.P(Cl)(Cl)(Cl)=O.O>ClCCCl>[CH3:18][C:19]1[CH:20]=[C:21]2[N:26]([C:27]=1[C:11]([CH:9]1[CH2:8][CH2:7][C:6]3[N:2]=[CH:3][NH:4][C:5]=3[CH2:10]1)=[O:12])[CH:25]=[CH:24][CH:23]=[CH:22]2

参加物

6

反応物 4

HCID 962WaterHCID 24813Phosphorus oxychlorideHCID 5826302-MethylindolizineHCID 18985210Pyrrolidin-1-yl(4,5,6,7-tetrahydro-1H-benzo[d]imidazol-5-yl)methanone hydrochloride

生成物 1

HCID 189852225-[(2-Methylindolizin-3-yl)carbonyl]-4,5,6,7-tetrahydrobenzimidazole収率 38.5%

試薬・触媒・溶媒 1

HCID 111,2-Dichloroethane溶媒

反応条件

温度
85 °C

実験手順

To a solution of 0.50 g of N-[(4,5,6,7-tetrahydrobenzimidazol-5-yl)carbonyl]pyrrolidinehydrochloride and 0.39 g of 2-methylindolizine in 5 ml of 1,2-dichloroethane was added dropwise 0.90 g of phosphorus oxychloride. The reaction mixture was refluxed at 85° C. for one night. After cooling to room temperature, 5 ml of water was added thereto. The organic layer was removed, and 10 ml of chloroform was added to the aqueous layer. The solution was adjusted to a pH of 9 with a 20% aqueous solution of sodium hydroxide and then extracted with chloroform. The organic layer was dried over anhydrous magnesium sulfate, and the solvent was removed by distillation. The residue was purified by silica gel column chromatography using chloroform/methanol as an eluent, followed by recrystallization from ethanol to obtain 0.21 g of 5-[(2-methylindolizin-3-yl)carbonyl]-4,5,6,7-tetrahydrobenzimidazole.

後処理

  1. temperatureAfter cooling to room temperature
  2. customThe organic layer was removed
  3. addition10 ml of chloroform was added to the aqueous layer
  4. extractionextracted with chloroform
  5. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
  6. customthe solvent was removed by distillation
  7. customThe residue was purified by silica gel column chromatography
  8. customfollowed by recrystallization from ethanol

出典と根拠

ORDレコード
ord-537106097f2848f4ba8749c2029b0f40
出典データセット
uspto-grants-1994_09
特許番号
US05344927

反応ノート

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