Potassium Hydroxide → 8-Ethyl-2-methyl-5-[2-(6-trifluoromethylpyridin-3-yl)-ethyl]-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole

HRID 2195937ノート

反応式

HRID 2195937 の反応式
[CH2:1]([C:3]1[CH:11]=[CH:10][C:9]2[NH:8][C:7]3[CH2:12][CH2:13][N:14]([CH3:16])[CH2:15][C:6]=3[C:5]=2[CH:4]=1)[CH3:2].[OH-].[K+].[F:19][C:20]([F:30])([F:29])[C:21]1[CH:26]=[CH:25][C:24]([CH:27]=[CH2:28])=[CH:23][N:22]=1>CN1CCCC1=O.[Cl-].[Na+].O>[CH2:1]([C:3]1[CH:11]=[CH:10][C:9]2[N:8]([CH2:28][CH2:27][C:24]3[CH:23]=[N:22][C:21]([C:20]([F:30])([F:19])[F:29])=[CH:26][CH:25]=3)[C:7]3[CH2:12][CH2:13][N:14]([CH3:16])[CH2:15][C:6]=3[C:5]=2[CH:4]=1)[CH3:2]

参加物

6

反応物 3

HCID 14797Potassium HydroxideHCID 574168485-Ethenyl-2-(trifluoromethyl)pyridineHCID 594550988-Ethyl-2-methyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole

生成物 1

HCID 578764138-Ethyl-2-methyl-5-[2-(6-trifluoromethylpyridin-3-yl)-ethyl]-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole収率 57%

試薬・触媒・溶媒 2

HCID 13387N-methyl-2-pyrrolidone溶媒HCID 57417360Sodium chloride; water溶媒

実験手順

To a solution of 8-Ethyl-2-methyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole (0.107 g. 0.0005 mol) in N-methyl 2-pyrolidone (2.0 mL) was added powdered potassium hydroxide (0.224 g, 0.004 mol) and allowed to stir for 10 min at RT. 2-trifluoromethyl-5-vinyl pyridine (0.095 g, 0.00055 mol) was added and stirred for further 1 h. at 60 deg C., After completion of TLC, Reaction mixture was diluted with brine (5 mL) and extracted with ethyl acetate (3×50 mL). The organic layer was dried over anhydrous sodium sulphate and concentrated under reduced pressure using rotary evaporator. The crude was purified through column chromatography (4% MeOH:DCM in silica 100-200 mesh, Diameter of column—2.5 cm, Height of silica—approx. 5 inch) to provide the desired compound as brown oil (0.11 g, 57% yield). 8-Ethyl-2-methyl-5-[2-(6-trifluoromethyl-pyridin-3-yl)-ethyl]-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole (0.1 g, 0.000258 mol) was dissolved in THF (2.0 mL). A solution of oxalic acid dihydrate (0.032 g, 0.000258 mol) in THF (2 mL) was added and stirred for 30 min at RT, Precipitate obtained was filtered and dried to give oxalate salt as white solid (0.080 g, 65% yield).

後処理

  1. stirringstirred for further 1 h. at 60 deg C
  2. custom, After completion of TLC, Reaction mixture
  3. extractionextracted with ethyl acetate (3×50 mL)
  4. dry with materialThe organic layer was dried over anhydrous sodium sulphate
  5. concentrationconcentrated under reduced pressure
  6. customevaporator
  7. customThe crude was purified through column chromatography (4% MeOH:DCM in silica 100-200 mesh, Diameter of column—2.5 cm, Height of silica—approx. 5 inch)

出典と根拠

ORDレコード
ord-7a803818b11b45c5be6902b68d0eeffa
出典データセット
uspto-grants-2012_12
特許番号
US08338408B2

反応ノート

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