Quinoline → 5-[(1Z)-2-Phenylvinyl]-3-(4-fluorophenyl)-1H-indazole

HRID 1353707Notes

Reaction equation

HRID 1353707 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:16]3[C:11](=[CH:12][CH:13]=[C:14]([C:17]#[C:18][C:19]4[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=4)[CH:15]=3)[NH:10][N:9]=2)=[CH:4][CH:3]=1.N1C2C(=CC=CC=2)C=CC=1>C(OCC)(=O)C.[Pd]>[C:19]1(/[CH:18]=[CH:17]\[C:14]2[CH:15]=[C:16]3[C:11](=[CH:12][CH:13]=2)[NH:10][N:9]=[C:8]3[C:5]2[CH:4]=[CH:3][C:2]([F:1])=[CH:7][CH:6]=2)[CH:20]=[CH:21][CH:22]=[CH:23][CH:24]=1

Participants

5

Reactant 2

HCID 7047QuinolineHCID 224801623-(4-Fluorophenyl)-5-(2-Phenylethynyl)-1H-Indazole

Product 1

HCID 574409205-[(1Z)-2-Phenylvinyl]-3-(4-fluorophenyl)-1H-indazoleYield 46%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 8857Ethyl AcetateSolvent

Procedure

A mixture of 3-(4-fluorophenyl)-5-(2-phenylethynyl)-1H-indazole (0.050 g, 0.16 mmol), quinoline (0.030 g), and palladium (5 wt. % on barium carbonate, 0.015 g) in ethyl acetate (10 mL) was stirred under hydrogen for 5 hours. It was filtered with celite and washed with ethyl acetate. The filtrate was washed with 5% hydrochloric acid solution and brine, dried over magnesium sulfate, filtered, and concentrated. The residue was then purified by chromatography (SiO2, 15–30% ethyl acetate/hexane) and by HPLC to provide the title compound (0.023 g, 46% yield): 1H NMR (CDCl3) δ 10.15 (br s, 1H), 7.83 (s, 1H), 7.70 (m, 2H), 7.29 (m, 7H), 7.11 (t, 2H), 6.72 (d, 1H), 6.68 (d, 1H); ES-MS (m/z) 315 [M+1]+.

Workup

  1. filtrationIt was filtered with celite
  2. washwashed with ethyl acetate
  3. washThe filtrate was washed with 5% hydrochloric acid solution and brine
  4. dry with materialdried over magnesium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe residue was then purified by chromatography (SiO2, 15–30% ethyl acetate/hexane) and by HPLC

Sources & evidence

ORD record
ord-ea96f6244461476d82bfdb208bab1d9e
Source dataset
uspto-grants-2007_05
Patent number
US07220771B2

Reaction notes

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