Triethylamine → 6-Chloro-2-[[4-[5-(trifluoromethyl)pyridin-2-yl]-1-piperazinyl]methyl]imidazo[1,2-a]pyridine

HRID 1416276

반응식

HRID 1416276 반응식
[F:1][C:2]([F:16])([F:15])[C:3]1[CH:4]=[CH:5][C:6]([N:9]2[CH2:14][CH2:13][NH:12][CH2:11][CH2:10]2)=[N:7][CH:8]=1.[Cl:17][C:18]1[CH:19]=[CH:20][C:21]2[N:22]([CH:24]=[C:25]([CH2:27]Cl)[N:26]=2)[CH:23]=1.C(N(CC)CC)C>C(O)CO>[Cl:17][C:18]1[CH:19]=[CH:20][C:21]2[N:22]([CH:24]=[C:25]([CH2:27][N:12]3[CH2:11][CH2:10][N:9]([C:6]4[CH:5]=[CH:4][C:3]([C:2]([F:1])([F:15])[F:16])=[CH:8][N:7]=4)[CH2:14][CH2:13]3)[N:26]=2)[CH:23]=1

참가 물질

5

반응물 3

HCID 8471TriethylamineHCID 6676181-(5-Trifluoromethyl-pyridin-2-yl)-piperazineHCID 48683896-Chloro-2-(chloromethyl)imidazo[1,2-a]pyridine2회

생성물 1

HCID 193671176-Chloro-2-[[4-[5-(trifluoromethyl)pyridin-2-yl]-1-piperazinyl]methyl]imidazo[1,2-a]pyridine수율 66.8%

시약·촉매·용매 1

HCID 174Ethylene Glycol용매

실험 절차

A mixture of 1-(5-trifluoromethylpyridin-2-yl)piperazine (0.4803 g), 6-chloro-2-(chloromethyl) imidazo[1,2-a]pyridine (Example 4, Step 1; 0.4177 g), triethylamine (0.231 g), and ethylene glycol (1 mL) is stirred at 80° C. for 70 min. after which additional 6-chloro-2-(chloromethyl)imidazo[1,2-a]pyridine (0.072 g) is added; thirty minutes later another portion (0.0517 g) is added. After stirring for a total of 2 h, the mixture is cooled and partitioned between dichloromethane and aq. sodium bicarbonate. The organic layers are dried over sodium sulfate and concentrated. Chromatography on silica gel using methanol/dichloromethane (4/96) and crystallization from ethyl ether/hexane gives 0.549 g of the title compound; mp 81-82° C.; MS m/z 395; IR (mineral oil) 1617, 1332, 1328, 1112, 1082 cm-1. 1H NMR (CDCl3) δ2.68, 3.69, 3.77, 6.62, 7.14, 7.52, 7.55, 7.61, 8.14, 8.38.

후처리

  1. additionis added
  2. additionthirty minutes later another portion (0.0517 g) is added
  3. temperaturethe mixture is cooled
  4. custompartitioned between dichloromethane and aq. sodium bicarbonate
  5. dry with materialThe organic layers are dried over sodium sulfate
  6. concentrationconcentrated
  7. custommethanol/dichloromethane (4/96) and crystallization from ethyl ether/hexane

출처 및 근거

ORD 기록
ord-771c779c217e4f72a3f32110133b22b5
출처 데이터셋
uspto-grants-1999_06
특허 번호
US05912246

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