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Dichloromethane → 3-chloro-6-(5-chloro-2-fluoropyridin-4-yl)-N-((tetrahydro-2H-pyran-4-yl)methyl)pyrazin-2-amine

HRID 1963938
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HRID 1963938 반응식
Br[C:2]1[N:7]=[C:6]([NH:8][CH2:9][CH:10]2[CH2:15][CH2:14][O:13][CH2:12][CH2:11]2)[C:5]([Cl:16])=[N:4][CH:3]=1.C([O-])([O-])=O.[Na+].[Na+].[Cl:23][C:24]1[C:25](B(O)O)=[CH:26][C:27]([F:30])=[N:28][CH:29]=1.C(Cl)Cl>COCCOC.CCOC(C)=O.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[Cl:16][C:5]1[C:6]([NH:8][CH2:9][CH:10]2[CH2:15][CH2:14][O:13][CH2:12][CH2:11]2)=[N:7][C:2]([C:25]2[C:24]([Cl:23])=[CH:29][N:28]=[C:27]([F:30])[CH:26]=2)=[CH:3][N:4]=1
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8

반응물 4

HCID 6344DichloromethaneHCID 10340Sodium CarbonateHCID 44754822(5-Chloro-2-fluoropyridin-4-yl)boronic acidHCID 729420696-Bromo-3-chloro-N-((tetrahydro-2H-pyran-4-yl)methyl)pyrazin-2-amine

생성물 1

HCID 866506283-chloro-6-(5-chloro-2-fluoropyridin-4-yl)-N-((tetrahydro-2H-pyran-4-yl)methyl)pyrazin-2-amine수율 38.4%

시약·촉매·용매 3

HCID 44119782Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)촉매HCID 80711,2-Dimethoxyethane용매HCID 8857Ethyl Acetate용매

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온도
100 °C

실험 절차

To a degassed suspension of 6-bromo-3-chloro-N-((tetrahydro-2H-pyran-4-yl)methyl)pyrazin-2-amine (358 mg, 1.168 mmol), Na2CO3 (1.518 ml, 3.04 mmol) and 5-chloro-2-fluoropyridin-4-ylboronic acid (307 mg, 1.752 mmol) in DME (5 ml) was added PdCl2(dppf).CH2Cl2 adduct (76 mg, 0.093 mmol). The reaction mixture was capped in a flask and heated to 100° C. for 4 hr an oil bath. The reaction mixture was diluted with EtOAc and washed with H2O saturated NaCl. The organic layer was dried Na2SO4, filtered and concentrated. The crude oil/solid was purified column chromatography on silica gel (30% EtOAc/Hexane) to yield 3-chloro-6-(5-chloro-2-fluoropyridin-4-yl)-N-((tetrahydro-2H-pyran-4-yl)methyl)pyrazin-2-amine (160 mg, 0.448 mmol, 38.4% yield), LCMS (m/z): 357.0 (MH+), retention time=1.02 min.

후처리

  1. customThe reaction mixture was capped in a flask
  2. washwashed with H2O saturated NaCl
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customThe crude oil/solid was purified column chromatography on silica gel (30% EtOAc/Hexane)

출처 및 근거

ORD 기록
ord-5e4c1d57412c4f50b7ee99bfa4b40af6
출처 데이터셋
uspto-grants-2013_04
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08415381B2

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