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

HRID 447122
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HRID 447122 반응식
C[O:2][C:3]([C:5]1[N:6]=[CH:7][C:8]([N:11]2[CH2:16][CH2:15][N:14]([C:17]3[N:18]=[N:19][C:20]([CH2:25][C:26]4[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=4)=[C:21]([CH3:24])[C:22]=3[CH3:23])[CH2:13][C@H:12]2[CH3:32])=[N:9][CH:10]=1)=[O:4].[Li+].[OH-].O.C1COCC1>CO>[CH2:25]([C:20]1[N:19]=[N:18][C:17]([N:14]2[CH2:15][CH2:16][N:11]([C:8]3[CH:7]=[N:6][C:5]([C:3]([OH:4])=[O:2])=[CH:10][N:9]=3)[C@H:12]([CH3:32])[CH2:13]2)=[C:22]([CH3:23])[C:21]=1[CH3:24])[C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

6

반응물 4

HCID 962WaterHCID 3939Lithium HydroxideHCID 8028TetrahydrofuranHCID 59191561(R)-Methyl 5-(4-(6-benzyl-4,5-dimethylpyridazin-3-yl)-2-methylpiperazin-1-yl)pyrazine-2-carboxylate

생성물 1

HCID 59191562(R)-4-(6-Benzyl-4,5-dimethyl-pyridazin-3-yl)-2-methyl-3,4,5,6-tetrahydro-2H-[1,2']bipyrazinyl-5'-carboxylic acid수율 84%

시약·촉매·용매 1

HCID 887Methanol용매

실험 절차

(R)-4-(6-Benzyl-4,5-dimethyl-pyridazin-3-yl)-2-methyl-3,4,5,6-tetrahydro-2H-[1,2′]bipyrazinyl-5′-carboxylic acid methyl ester (1.8 g, 4.16 mmol) is combined with LiOH (998 mg, 42 mmol), H2O (20 mL), THF (20 mL), and MeOH (10 mL). The combined mixture is allowed to stir at room temperature for 16 h. It is concentrated to remove organic solvents in vacuo. Additional water is added and the pH is adjusted to 4.0 with HCl or phosphate buffer. The solution is extracted with EtOAc and the combined organic extracts are washed with brine. The extract is dried over sodium sulfate and filtered to remove the drying agent. The filtrate is concentrated to afford the title compound (1.46 g, 84%).

후처리

  1. concentrationIt is concentrated
  2. customto remove organic solvents in vacuo
  3. additionAdditional water is added
  4. extractionThe solution is extracted with EtOAc
  5. washthe combined organic extracts are washed with brine
  6. dry with materialThe extract is dried over sodium sulfate
  7. filtrationfiltered
  8. customto remove the drying agent
  9. concentrationThe filtrate is concentrated

출처 및 근거

ORD 기록
ord-0f9f9049deca4752b9cdf1d9056cef9f
출처 데이터셋
uspto-grants-2013_07
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08481542B2

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