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1,4-Dioxane → 2-Fluoro-3-(2-methoxy-4-nitrophenyl)pyridine

HRID 218520
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HRID 218520 반응식
I[C:2]1[CH:7]=[CH:6][C:5]([N+:8]([O-:10])=[O:9])=[CH:4][C:3]=1[O:11][CH3:12].[F:13][C:14]1[C:19](B(O)O)=[CH:18][CH:17]=[CH:16][N:15]=1.C(=O)([O-])O.[Na+].O1CCOCC1>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]>[F:13][C:14]1[C:19]([C:2]2[CH:7]=[CH:6][C:5]([N+:8]([O-:10])=[O:9])=[CH:4][C:3]=2[O:11][CH3:12])=[CH:18][CH:17]=[CH:16][N:15]=1
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

7

반응물 4

HCID 312751,4-DioxaneHCID 2301031-Iodo-2-methoxy-4-nitrobenzeneHCID 516892Sodium BicarbonateHCID 27832702-Fluoropyridine-3-boronic acid

생성물 1

HCID 595867372-Fluoro-3-(2-methoxy-4-nitrophenyl)pyridine

시약·촉매·용매 2

HCID 44119782
Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)
촉매
HCID 962Water용매2회

실험 절차

2.00 g (7.17 mmol) of 2-iodo-5-nitroanisole, 2.02 g (14.3 mmol) of (2-fluoropyridin-3-yl)boronic acid (A. Bouillon, J.-C. Lancelot, V. Collot, P. R. Bovy, S. Rault, Tetrahedron 2002, 58, 3323-3328.), 1.81 g (21.5 mmol) of sodium hydrogen carbonate and 117 mg (0.14 mmol) of [1,1′-bis(diphenylphosphino)ferrocene]palladium dichloride are heated to 100° C. in a degassed mixture of 40 ml of dioxane and 10 ml of water for 1 h. After cooling, the mixture is diluted with water and extracted three times with ethyl acetate. The combined organic phases are dried over sodium sulfate, clarified over activated carbon and concentrated. Purification is effected by chromatography on silica gel (eluent: dichloromethane) to obtain 1.55 g (87% of theory) of the desired product.

후처리

  1. temperatureAfter cooling
  2. extractionextracted three times with ethyl acetate
  3. dry with materialThe combined organic phases are dried over sodium sulfate
  4. concentrationconcentrated
  5. customPurification

출처 및 근거

ORD 기록
ord-ff579b8070394bb5872f49f6b21404b3
출처 데이터셋
uspto-grants-2012_06
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08198267B2

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