Sodium Carbonate → 2-(Cyclopent-1-en-1-yl)-4-fluoro-1-methoxybenZene

HRID 471919

반응식

HRID 471919 반응식
Br[C:2]1[CH:7]=[C:6]([F:8])[CH:5]=[CH:4][C:3]=1[O:9][CH3:10].[C:11]1(B(O)O)[CH2:15][CH2:14][CH2:13][CH:12]=1.C([O-])([O-])=O.[Na+].[Na+]>C(#N)C.ClCCl.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]>[C:11]1([C:2]2[CH:7]=[C:6]([F:8])[CH:5]=[CH:4][C:3]=2[O:9][CH3:10])[CH2:15][CH2:14][CH2:13][CH:12]=1

참가 물질

7

반응물 3

HCID 10340Sodium CarbonateHCID 1362922-Bromo-4-fluoroanisoleHCID 3861343(Cyclopent-1-en-1-yl)boronic acid

생성물 1

HCID 593949342-(Cyclopent-1-en-1-yl)-4-fluoro-1-methoxybenZene수율 49.2%

시약·촉매·용매 3

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)촉매HCID 6342Acetonitrile용매HCID 6344Dichloromethane용매

실험 절차

A microwave vial was charged with 2-bromo-4-fluoro-1-methoxybenzene (500 mg, 2.44 mmol), 1-cyclopentenylboronic acid (273 mg, 2.44 mmol), and Pd(dppf)Cl2 (199 mg, 0.24 mmol). The solids were dissolved in acetonitrile (7 mL) and 2 M Na2CO3 (5 mL) and the mixture heated under microwave irradiation for 20 min at 110° C. The reaction was diluted with dichloromethane (50 mL) and the layers separated. The organic layer was washed with brine, dried over Na2SO4, filtered and concentrated. Purification by silica gel chromatography (10-30% ethyl acetate/hexane) provided 2-cyclopentenyl-4-fluoro-1-methoxybenzene (231 mg, 49% yield). 1H NMR (400.0 MHz, DMSO-d6) δ 7.01 (dd, J=3.1, 10.0 Hz, 1H), 6.92-6.82 (m, 1H), 6.54 (dd, J=2.4, 6.5 Hz, 1H), 6.54 (s, 1H), 3.87 (s, 3H), 2.78-2.73 (m, 2H), 2.62-2.57 (m, 2H), 2.03-1.95 (m, 2H).

후처리

  1. customthe layers separated
  2. washThe organic layer was washed with brine
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customPurification by silica gel chromatography (10-30% ethyl acetate/hexane)

출처 및 근거

ORD 기록
ord-801f08fdadbf482e93767a63b1276d67
출처 데이터셋
uspto-grants-2014_01
특허 번호
US08633189B2

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