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Dimethylformamide → 3-Fluoro-5-methoxy-4-nitrobenzonitrile

HRID 1947920
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HRID 1947920 반응식
Br[C:2]1[CH:3]=[C:4]([O:12][CH3:13])[C:5]([N+:9]([O-:11])=[O:10])=[C:6]([F:8])[CH:7]=1.[CH3:14][N:15](C=O)C>C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.[C-]#N.[Zn+2].[C-]#N>[F:8][C:6]1[CH:7]=[C:2]([CH:3]=[C:4]([O:12][CH3:13])[C:5]=1[N+:9]([O-:11])=[O:10])[C:14]#[N:15]
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참가 물질

5

반응물 2

HCID 6228DimethylformamideHCID 579556485-Bromo-3-fluoro-2-nitroanisole

생성물 1

HCID 579555403-Fluoro-5-methoxy-4-nitrobenzonitrile수율 84%

시약·촉매·용매 2

HCID 11186Zinc cyanide (Zn(CN)2)촉매HCID 178418397HCID 178418397, 화합물촉매

실험 절차

Into a microwave vial was added 5-bromo-1-fluoro-3-methoxy-2-nitrobenzene (1.75 g, 7.00 mmol), Pd(PPh3)4 (1.132 g, 0.9798 mmol), and zinc cyanide (0.8222 g, 7.002 mmol). The vial was sealed, and then DMF (28 mL) was added. The vial was evacuated and purged with N2 gas (3 times). The reaction mixture was irradiated on the microwave for 3-5 minutes at 150° C. The reaction mixture was quenched with water (30 mL) and then extracted with EtOAc (60 mL). The organic layer was washed with water (30 mL), brine (2×20 mL), dried over Na2SO4, filtered and concentrated under reduced pressure to yield a yellow oil. The crude material was purified by silica gel chromatography on an ISCO combi-flash Rf system using Heptane/EtOAc (100:0→55:45) as eluent to yield the desired product as a light yellow solid 1.15 g (84% yield). 1H NMR (CDCl3, 400 MHz): δ=4.01 (s, 3H), 7.14 (t, J=1.52 Hz, 1H), 7.19 (dd, J=8.21, 1.39 Hz, 1H).

후처리

  1. customThe vial was sealed
  2. customThe vial was evacuated
  3. custompurged with N2 gas (3 times)
  4. customThe reaction mixture was irradiated on the microwave for 3-5 minutes at 150° C
  5. customThe reaction mixture was quenched with water (30 mL)
  6. extractionextracted with EtOAc (60 mL)
  7. washThe organic layer was washed with water (30 mL), brine (2×20 mL)
  8. dry with materialdried over Na2SO4
  9. filtrationfiltered
  10. concentrationconcentrated under reduced pressure
  11. customto yield a yellow oil
  12. customThe crude material was purified by silica gel chromatography on an ISCO combi-flash Rf system

출처 및 근거

ORD 기록
ord-cef9714affd9433e93515d623cc2e0c5
출처 데이터셋
uspto-grants-2013_03
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08399433B2

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