Ethanol → Methyl 8-fluoro-4-(4-fluorophenyl)-7-methylquinoline-2-carboxylate

HRID 922797Notes

Reaction equation

Cl[C:2]1[C:11]2[C:6](=[C:7]([F:13])[C:8]([CH3:12])=[CH:9][CH:10]=2)[N:5]=[C:4]([C:14]([O:16][CH3:17])=[O:15])[CH:3]=1.[F:18][C:19]1[CH:24]=[CH:23][C:22](B(O)O)=[CH:21][CH:20]=1.CCO.C(=O)([O-])[O-].[Na+].[Na+]>C1(C)C=CC=CC=1.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>[F:13][C:7]1[C:8]([CH3:12])=[CH:9][CH:10]=[C:11]2[C:6]=1[N:5]=[C:4]([C:14]([O:16][CH3:17])=[O:15])[CH:3]=[C:2]2[C:22]1[CH:23]=[CH:24][C:19]([F:18])=[CH:20][CH:21]=1

Participants

Conditions

Temperature: 75 °C

Procedure

Methyl 4-chloro-8-fluoro-7-methylquinoline-2-carboxylate (7-8, 993 mg, 3.91 mmol), (4-Fluorophenyl)boronic acid (575 mg, 4.11 mmol), and Pd(Ph3P)4 (226 mg, 0.196 mmol) were dissolved in degassed toluene (25 mL). Degasses EtOH (2.7 mL) was added followed by degassed 2M aq. Sodium Carbonate (4.31 mL, 8.61 mmol). The reaction was heated at 75° C. overnight then quenched with water and the mixture was extracted with ethyl acetate (×3). The combined organic fractions were dried (MgSO4), filtered and the solvent was evaporated under reduced pressure. The residue was triturated with ether to afford Methyl 8-fluoro-4-(4-fluorophenyl)-7-methylquinoline-2-carboxylate (7-9, 991 mg, 81% yield) as a tan solid, LCMS shows the compound is 89% pure, LRMS m/z (M+H)+ 314.1 found, 314.0 required.

Workup

customthen quenched with water
extractionthe mixture was extracted with ethyl acetate (×3)
dry with materialThe combined organic fractions were dried (MgSO4)
filtrationfiltered
customthe solvent was evaporated under reduced pressure
customThe residue was triturated with ether

Sources & evidence

ORD record: ord-fcab301d59584232b3c1bf8b271ffae9
Source dataset: uspto-grants-2016_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09278960B2

Reaction notes

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