5-Bromo-1,2,3-trimethoxybenzene → HCID 178418846, compound

HRID 1357872Notes

Reaction equation

HRID 1357872 reaction equation
C([Li:5])CCC.[CH3:6][O:7][C:8]1[CH:9]=[C:10](Br)[CH:11]=[C:12]([O:16][CH3:17])[C:13]=1[O:14][CH3:15]>CCOCC>[CH3:6][O:7][C:8]1[CH:9]=[C:10]([Li:5])[CH:11]=[C:12]([O:16][CH3:17])[C:13]=1[O:14][CH3:15]

Participants

4

Reactant 2

HCID 758855-Bromo-1,2,3-trimethoxybenzeneHCID 178418339Butyllithium

Product 1

HCID 178418846HCID 178418846, compound

Reagents, catalysts & solvents 1

HCID 3283Diethyl EtherSolvent2×

Procedure

To a stirred solution of n-butyllithium (3.7 mL, 1.6 M in hexane solution, 6.0 mmol) in dry ether (40 mL), a solution of 3,4,5-trimethoxyphenylbromide (0.74 g, 3.0 mmol) in ether (20 mL) was added under dry nitrogen at −78° C. The solution was stirred for 1 h in order to form 3,4,5-trimethoxyphenyllithum. The ketone reagent (3.0 mmol) was added at −20° C., and the stirring was continued for 2 h (−20° C.-rt). The mixture was partitioned between CH2Cl2 and water, the organic layer was dried over anhydrous sodium sulfate, and, after filtration, the organic layer was concentrated in vacuo to provide a yellow oil. The compound was purified by column chromatography.

Sources & evidence

ORD record
ord-8e4c7a1106aa403881acbedd0ae0d432
Source dataset
uspto-grants-2003_07
Patent number
US06593374B2

Reaction notes

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