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Diisopropylethylamine → (R)-4-[6-(4-fluoro-phenyl)-4,5-dimethyl-pyridazin-3-yl]-2-methyl-3,4,5,6-tetrahydro-2H-[1,2']bipyrazinyl-5'-carboxylic acid methyl ester

HRID 447074
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인쇄 미리보기

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HRID 447074 반응식
[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[N:9]=[N:10][C:11]([N:16]3[CH2:21][CH2:20][NH:19][C@H:18]([CH3:22])[CH2:17]3)=[C:12]([CH3:15])[C:13]=2[CH3:14])=[CH:4][CH:3]=1.[CH3:23][O:24][C:25]([C:27]1[CH:32]=[N:31][C:30](Cl)=[CH:29][N:28]=1)=[O:26].C(N(C(C)C)CC)(C)C>O1CCOCC1>[CH3:23][O:24][C:25]([C:27]1[N:28]=[CH:29][C:30]([N:19]2[CH2:20][CH2:21][N:16]([C:11]3[N:10]=[N:9][C:8]([C:5]4[CH:4]=[CH:3][C:2]([F:1])=[CH:7][CH:6]=4)=[C:13]([CH3:14])[C:12]=3[CH3:15])[CH2:17][C@H:18]2[CH3:22])=[N:31][CH:32]=1)=[O:26]
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참가 물질

5

반응물 3

HCID 81531DiisopropylethylamineHCID 406081Methyl 5-chloropyrazine-2-carboxylateHCID 591915663-(4-fluoro-phenyl)-4,5-dimethyl-6-((R)-3-methyl-piperazin-1-yl)-pyridazine

생성물 1

HCID 67179891(R)-4-[6-(4-fluoro-phenyl)-4,5-dimethyl-pyridazin-3-yl]-2-methyl-3,4,5,6-tetrahydro-2H-[1,2']bipyrazinyl-5'-carboxylic acid methyl ester수율 63.6%

시약·촉매·용매 1

HCID 31275
1,4-Dioxane
용매

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온도
110 °C

실험 절차

Combine 3-(4-fluoro-phenyl)-4,5-dimethyl-6-((R)-3-methyl-piperazin-1-yl)-pyridazine (522 mg, 1.73 mmol), 5-chloro-pyrazine-2-carboxylic acid methyl ester (360 mg, 2.07 mmol), diisopropylethylamine (900 μl, 5.19 mmol) and dioxane (3 mL) in a round bottom flask. Heat to 110° C. for 18 h. Concentrate reaction mixture and purify by column chromatography (0-100% ethylacetate/heptane gradient). Triturate product with acetonitrile to give 480 mg of (R)-4-[6-(4-fluoro-phenyl)-4,5-dimethyl-pyridazin-3-yl]-2-methyl-3,4,5,6-tetrahydro-2H-[1,2′]bipyrazinyl-5′-carboxylic acid methyl ester (63%).

후처리

  1. concentrationConcentrate
  2. customreaction mixture
  3. custompurify by column chromatography (0-100% ethylacetate/heptane gradient)

출처 및 근거

ORD 기록
ord-eca64aa21a234bfdaab63b6dba1eb111
출처 데이터셋
uspto-grants-2013_07
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08481542B2

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