Acetonitrile → 4-(2,4-Dimethoxy-3-fluoro-phenylethynyl)-1-methyl-1H-pyrazole

HRID 1042579노트

반응식

HRID 1042579 반응식
[CH3:1][O:2][C:3]1[C:8]([F:9])=[C:7]([O:10][CH3:11])[CH:6]=[CH:5][C:4]=1I.[C:13]([C:15]1[CH:16]=[N:17][N:18]([CH3:20])[CH:19]=1)#[CH:14].C(#N)C>Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.[Cu]I.C(N(CC)CC)C>[CH3:1][O:2][C:3]1[C:8]([F:9])=[C:7]([O:10][CH3:11])[CH:6]=[CH:5][C:4]=1[C:14]#[C:13][C:15]1[CH:16]=[N:17][N:18]([CH3:20])[CH:19]=1

참가 물질

7

반응물 3

HCID 6342AcetonitrileHCID 509982281,3-Dimethoxy-2-fluoro-4-iodobenzeneHCID 511383214-Ethynyl-1-methyl-1H-pyrazole

생성물 1

HCID 687686434-(2,4-Dimethoxy-3-fluoro-phenylethynyl)-1-methyl-1H-pyrazole수율 86%

시약·촉매·용매 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)촉매HCID 178418476HCID 178418476, 화합물촉매HCID 8471Triethylamine용매

실험 절차

To a mixture of (0.95 mmol) of 2,4-dimethoxy-3-fluoro-iodo benzene, 0.122 g (1.15 mmol) of 4-ethynyl-1-methyl-1H-pyrazole, 0.028 g (0.04 mmol) of dichlorobis(triphenylphosphine)palladium (II) and 8 mg (0.042 mmol) of copper (I) iodide 4 mL of anhydrous acetonitrile and 2 mL of triethylamine were added under nitrogen atmosphere at room temperature. The resulting mixture was stirred for 1 hour, when TLC indicated a consumption of the iodobenzene. The solvent was evaporated under reduced pressure and the residue purified by flash column chromatography (silica gel; dichloromethane:ethyl acetate 9:1) to give the title compound in an 86% yield as creamy crystals. H1 NMR (CDCl3) 3.88 (s, 3H, Me); 3.89 (s, 3H, MeO); 4.05 (d, 3H, MeO, J=1.34 Hz); 6.62 (tr, 1H, CH, J=8.2 Hz); 7.12 (dd, 1H, CH, J=8.2 Hz, J=2.55 Hz); 7.53 (s, 1H, CH pyr); 7.62 s, 1H, CH pyr).

후처리

  1. additionwere added under nitrogen atmosphere at room temperature
  2. customa consumption of the iodobenzene
  3. customThe solvent was evaporated under reduced pressure
  4. customthe residue purified by flash column chromatography (silica gel; dichloromethane:ethyl acetate 9:1)

출처 및 근거

ORD 기록
ord-28d9fbc1ba384e94b3604b7c73efc48c
출처 데이터셋
uspto-grants-2013_10
특허 번호
US08557982B2

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