Water → HCID 89704777, compound

HRID 929003Notes

Reaction equation

[CH3:1][O:2][C:3]1[CH:30]=[CH:29][C:6]([CH2:7][S:8][C:9]2[C:10](F)=[C:11]([F:27])[C:12]([NH:19][C:20]3[CH:25]=[CH:24][CH:23]=[CH:22][C:21]=3[F:26])=[C:13]([CH:18]=2)[C:14]([O:16][CH3:17])=[O:15])=[CH:5][CH:4]=1.[N-:31]=[N+:32]=[N-:33].[Na+].O>CN(C=O)C>[N:31]([C:10]1[C:9]([S:8][CH2:7][C:6]2[CH:29]=[CH:30][C:3]([O:2][CH3:1])=[CH:4][CH:5]=2)=[CH:18][C:13]([C:14]([O:16][CH3:17])=[O:15])=[C:12]([NH:19][C:20]2[CH:25]=[CH:24][CH:23]=[CH:22][C:21]=2[F:26])[C:11]=1[F:27])=[N+:32]=[N-:33]

Participants

Conditions

Temperature: 90 °C

Procedure

To a solution of methyl 5-(4-methoxybenzylthio)-3,4-difluoro-2-((2-fluorophenyl)amino)benzoate (12.64 g, 29.2 mmol) in DMF (30 mL) was added NaN3 (2.28 g, 35.0 mmol) at ambient temperature. The mixture was stirred at 90° C. for 3 h. Then water (150 mL) was added. The solution was extracted with ethyl acetate (100 mL×3). The combined organic extracts were washed with water (100 mL×3) and brine (100 mL), dried over Na2SO4 and concentrated in vacuo. The residue was purified by flash column chromatography on silica gel (petroleum ether/ethyl acetate, 10:1, v/v) and gave the desired product (white solid, 10.38 g, 78% yield). 1H NMR (400 MHz, CDCl3): δ 8.98 (s, 1H), 7.75 (s, 1H), 7.02-7.28 (m, 6H), 6.83-6.85 (m, 2H), 4.03 (s, 2H), 3.92 (s, 3H), 3.81 (s, 3H).

Workup

extractionThe solution was extracted with ethyl acetate (100 mL×3)
washThe combined organic extracts were washed with water (100 mL×3) and brine (100 mL)
dry with materialdried over Na2SO4
concentrationconcentrated in vacuo
customThe residue was purified by flash column chromatography on silica gel (petroleum ether/ethyl acetate, 10:1

Sources & evidence

ORD record: ord-3d8d084215514f5c8562a90577113ce4
Source dataset: uspto-grants-2016_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09290468B2

Reaction notes

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