Methyl iodide → Methyl 5-bromo-3-(cyclohexyl(methyl)amino)-2-methylbenzoate

HRID 1616370Notes

Reaction equation

[Br:1][C:2]1[CH:3]=[C:4]([NH:13][CH:14]2[CH2:19][CH2:18][CH2:17][CH2:16][CH2:15]2)[C:5]([CH3:12])=[C:6]([CH:11]=1)[C:7]([O:9][CH3:10])=[O:8].[C:20](=O)([O-])[O-].[Cs+].[Cs+].CI>C(#N)C>[Br:1][C:2]1[CH:3]=[C:4]([N:13]([CH:14]2[CH2:19][CH2:18][CH2:17][CH2:16][CH2:15]2)[CH3:20])[C:5]([CH3:12])=[C:6]([CH:11]=1)[C:7]([O:9][CH3:10])=[O:8]

Participants

Conditions

Temperature: 80 °C

Procedure

To a stirred solution of methyl 5-bromo-3-(cyclohexylamino)-2-methylbenzoate (2.75 g, 8.45 mmol) in acetonitrile (25 mL), cesium carbonate (5.45 g, 16.9 mmol) and methyl iodide (6 g, 42.3 mmol) were added; resulting solution was heated at 80° C. for 20 h. On completion, the solution was cooled to room temperature and filtered, and the residue was washed with ethyl acetate. The filtrate was concentrated and then purified by column chromatography to afford methyl 5-bromo-3-(cyclohexyl(methyl)amino)-2-methylbenzoate (2.5 g, 87%).

Workup

temperatureOn completion, the solution was cooled to room temperature
filtrationfiltered
washthe residue was washed with ethyl acetate
concentrationThe filtrate was concentrated
custompurified by column chromatography

Sources & evidence

ORD record: ord-35b2b04f74334598aa0f80472906e14e
Source dataset: uspto-grants-2014_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08765732B2

Reaction notes

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