Water → HCID 90332461, compound

HRID 595642Notes

Reaction equation

[Br:1][C:2]1[C:3]([N:16]([CH3:21])[S:17]([CH3:20])(=[O:19])=[O:18])=[CH:4][C:5]2[O:9][C:8](I)=[C:7]([C:11]([NH:13][CH3:14])=[O:12])[C:6]=2[CH:15]=1.[F:22][C:23]([F:34])([F:33])[C:24]1[N:29]=[CH:28][C:27](B(O)O)=[CH:26][CH:25]=1.C([O-])([O-])=O.[Na+].[Na+].O>O1CCOCC1.O.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]>[Br:1][C:2]1[C:3]([N:16]([CH3:21])[S:17]([CH3:20])(=[O:19])=[O:18])=[CH:4][C:5]2[O:9][C:8]([C:27]3[CH:28]=[N:29][C:24]([C:23]([F:34])([F:33])[F:22])=[CH:25][CH:26]=3)=[C:7]([C:11]([NH:13][CH3:14])=[O:12])[C:6]=2[CH:15]=1

Participants

Conditions

Temperature: 80 °C

Procedure

A mixture of 5-bromo-2-iodo-N-methyl-6-(N-methylmethylsulfonamido)benzofuran-3-carboxamide (1.5 g, 3.1 mmol), (6-(trifluoromethyl)pyridin-3-yl)boronic acid (705 mg, 3.7 mmol), Pd(dppf)Cl2 (245 mg, 0.3 mmol) and Na2CO3 (985 mg, 9.3 mmol) in dioxane/H2O (20 mL/4 mL) was stirred at 80° C. for 6 h. Water was added and the mixture was extracted with EtOAc. The organic phase was dried over Na2SO4 and concentrated in vacuum. The residue was purified by column chromatography (PE:EA=1:1) to give the product of 5-bromo-N-methyl-6-(N-methylmethylsulfonamido)-2-(6-(trifluoromethyl)pyridin-3-yl)benzofuran-3-carboxamide (1.4 g, yield: 90%). 1H-NMR (DMSO-d6, 400 MHz) δ 9.24 (s, 1H), 8.65 (d, J=4.4 Hz, 1H), 8.56 (d, J=8.0 Hz, 1H), 8.17 (s, 1H), 8.12 (d, J=8.0 Hz, 1H), 8.08 (s, 1H), 3.23 (s, 3H), 3.22 (s, 3H), 2.85 (d, J=4.4 Hz, 3H). MS (M+H)+: 506/508.

Workup

extractionthe mixture was extracted with EtOAc
dry with materialThe organic phase was dried over Na2SO4
concentrationconcentrated in vacuum
customThe residue was purified by column chromatography (PE:EA=1:1)

Sources & evidence

ORD record: ord-84623478031c4bfb9f4f6bc255473170
Source dataset: uspto-grants-2016_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09243002B2

Reaction notes

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