Water → HCID 70664928, compound

HRID 1403597Notes

Reaction equation

[CH3:1][CH:2]1[CH2:7][CH2:6][CH2:5][CH2:4][N:3]1[C:8]1[C:9](OS(C(F)(F)F)(=O)=O)=[N:10][C:11]2[C:16]([N:17]=1)=[CH:15][C:14]([C:18]([O:20][CH3:21])=[O:19])=[CH:13][CH:12]=2.[F:30][C:31]1[CH:36]=[CH:35][C:34](B(O)O)=[CH:33][CH:32]=1.[O-]P([O-])([O-])=O.[K+].[K+].[K+].O>O1CCOCC1.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:30][C:31]1[CH:36]=[CH:35][C:34]([C:9]2[C:8]([N:3]3[CH2:4][CH2:5][CH2:6][CH2:7][CH:2]3[CH3:1])=[N:17][C:16]3[C:11](=[CH:12][CH:13]=[C:14]([C:18]([O:20][CH3:21])=[O:19])[CH:15]=3)[N:10]=2)=[CH:33][CH:32]=1

Participants

Conditions

Temperature: 90 °C

Procedure

To a solution of methyl 3-(2-methylpiperidin-1-yl)-2-(trifluoromethylsulfonyloxy)quinoxaline-6-carboxylate (880 mg, crude) in dioxane (25 ml) was added Pd(PPh3)4 (100 mg, 0.09 mmol), 4-fluorophenylboronic acid (485 mg, 3.47 mmol), K3PO4 (735 mg, 3.46 mmol) and water (3 ml). The resulting solution was stirred for 1 hour at 90° C. under an inert atmosphere of nitrogen, and then concentrated in vacuo to give a residue, which was purified via silica gel column chromatography (1%-10% ethyl acetate in petroleum ether) to afford methyl 2-(4-fluorophenyl)-3-(2-methylpiperidin-1-yl)quinoxaline-6-carboxylate as a yellow solid (330 mg).

Workup

concentrationconcentrated in vacuo
customto give a residue, which
customwas purified via silica gel column chromatography (1%-10% ethyl acetate in petroleum ether)

Sources & evidence

ORD record: ord-afca79fe3f8143f28e570fdfc0b212fc
Source dataset: uspto-grants-2014_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08912188B2

Reaction notes

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