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Tert-butyl 4-[6-(6-chloropyrazolo[4,3-c]pyridin-1-yl)-2-pyridyl]piperazine-1-carboxylate → Tert-butyl 4-[6-[6-(6-methylpyrazin-2-yl)pyrazolo[4,3-c]pyridin-1-yl]-2-pyridyl]piperazine-1-carboxylate

HRID 57834
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인쇄 미리보기

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HRID 57834 반응식
Cl[C:2]1[N:7]=[CH:6][C:5]2[CH:8]=[N:9][N:10]([C:11]3[N:16]=[C:15]([N:17]4[CH2:22][CH2:21][N:20]([C:23]([O:25][C:26]([CH3:29])([CH3:28])[CH3:27])=[O:24])[CH2:19][CH2:18]4)[CH:14]=[CH:13][CH:12]=3)[C:4]=2[CH:3]=1.C[Sn](C)(C)[C:32]1[CH:37]=[N:36][CH:35]=[C:34]([CH3:38])[N:33]=1>CN(C)C(=O)C>[CH3:38][C:34]1[N:33]=[C:32]([C:2]2[N:7]=[CH:6][C:5]3[CH:8]=[N:9][N:10]([C:11]4[N:16]=[C:15]([N:17]5[CH2:22][CH2:21][N:20]([C:23]([O:25][C:26]([CH3:27])([CH3:29])[CH3:28])=[O:24])[CH2:19][CH2:18]5)[CH:14]=[CH:13][CH:12]=4)[C:4]=3[CH:3]=2)[CH:37]=[N:36][CH:35]=1
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참가 물질

4

반응물 2

HCID 86707015Tert-butyl 4-[6-(6-chloropyrazolo[4,3-c]pyridin-1-yl)-2-pyridyl]piperazine-1-carboxylateHCID 86707041Trimethyl-(6-methylpyrazin-2-yl)stannane

생성물 1

HCID 86707040Tert-butyl 4-[6-[6-(6-methylpyrazin-2-yl)pyrazolo[4,3-c]pyridin-1-yl]-2-pyridyl]piperazine-1-carboxylate수율 58%

시약·촉매·용매 1

HCID 31374Dimethylacetamide용매

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온도
150 °C

실험 절차

A solution of tert-butyl 4-[6-(6-chloropyrazolo[4,3-c]pyridin-1-yl)-2-pyridyl]piperazine-1-carboxylate (90 mg; 0.22 mmol and palladium(0)tetrakis(triphenylphosphine) (25 mg, 0.022 mmol in N,N-dimethylacetamide; 2.0 mL was added trimethyl-(6-methylpyrazin-2-yl)stannane (112 mg; 0.436 mmol). The reaction mixture was heated at 150° C. for 45 min in a microwave (Biotage). The reaction mixture was filtered through celite and concentrated. The crude product was diluted with EtOAc then washed with water. The organic layers was dried with sodium sulfate, filtered, and concentrated in vacuum. The crude product was purified by flash chromatography (EtOAc/Heptane eluted at 50% EtOAc) to give tert-butyl 4-[6-[6-(6-methylpyrazin-2-yl)pyrazolo[4,3-c]pyridin-1-yl]-2-pyridyl]piperazine-1-carboxylate 60 mg in 58% yield.

후처리

  1. filtrationThe reaction mixture was filtered through celite
  2. concentrationconcentrated
  3. additionThe crude product was diluted with EtOAc
  4. washthen washed with water
  5. dry with materialThe organic layers was dried with sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated in vacuum
  8. customThe crude product was purified by flash chromatography (EtOAc/Heptane eluted at 50% EtOAc)

출처 및 근거

ORD 기록
ord-c3bc146ef6234b4bbb4433cdb3078f2d
출처 데이터셋
uspto-grants-2016_09
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US09434725B2

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