Dimethylformamide → N-[2-(3,4-dimethoxyphenyl)ethyl]-3-fluoromethoxy-2-(4-chlorophenyl)acrylamide

HRID 1884221Notes

Reaction equation

[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH2:11][CH2:12][NH:13][C:14](=[O:25])[C:15]([C:18]2[CH:23]=[CH:22][C:21]([Cl:24])=[CH:20][CH:19]=2)=[CH:16][OH:17])[CH:6]=[CH:7][C:8]=1[O:9][CH3:10].[H-].[Na+].CN(C)C=O.Br[CH2:34][F:35]>O>[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH2:11][CH2:12][NH:13][C:14](=[O:25])[C:15]([C:18]2[CH:23]=[CH:22][C:21]([Cl:24])=[CH:20][CH:19]=2)=[CH:16][O:17][CH2:34][F:35])[CH:6]=[CH:7][C:8]=1[O:9][CH3:10]

Participants

Conditions

Temperature: -15 °C

Procedure

One gram (1.00 g) of N-[2-(3,4-dimethoxyphenyl)ethyl]-3-hydroxy-2-(4-chlorophenyl) acrylamide (2.66 mmol), 130 mg (3.25 mmol) of 60% sodium hydride and 10 ml of anhydrous N,N-dimethylformamide were mixed and 0.46 g of bromofluoromethane was added thereto at −15° C. The mixture was stirred at −15° C. for 30 minutes and then stirred at 0° C. for 1 hour. The reaction mixture was added to water and extracted with ethyl acetate. The organic layer was washed with 5% hydrochloric acid and saturated brine subsequently, dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was subjected to silica gel preparative thin layer chromatography (eluent, hexane:ethyl acetate=1:1) to give 100 mg of N-[2-(3,4-dimethoxyphenyl)ethyl]-3-fluoromethoxy-2-(4-chlorophenyl)acrylamide (the present compound 1016).

Workup

customat −15° C
stirringstirred at 0° C. for 1 hour
extractionextracted with ethyl acetate
washThe organic layer was washed with 5% hydrochloric acid and saturated brine subsequently
dry with materialdried over anhydrous magnesium sulfate
concentrationconcentrated under reduced pressure

Sources & evidence

ORD record: ord-fe30f3d7be7547e9b0ccb15b4fc4d819
Source dataset: uspto-grants-2004_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06762321B2

Reaction notes

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