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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2209293Generated: October 29, 2026

Water → 7-Bromo-1,4,4-trimethyl-3,4-dihydroquinolin-2(1H)-one

https://huagongshe.com/reaction/2209293

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantMethyl iodideHCID 6328—
ReactantPotassium CarbonateHCID 11430—
Reactant7-Bromo-4,4-dimethyl-3,4-dihydroquinolin-2(1H)-oneHCID 19963707—
SolventDimethylformamideHCID 6228—
Product7-Bromo-1,4,4-trimethyl-3,4-dihydroquinolin-2(1H)-oneHCID 19935516—

Reaction Steps

7-bromo-4,4-dimethyl-3,4-dihydroquinolin-2(1H)-one (210 mg, 0.83 mmol) and K2CO3 (335 mg, 2.42 mmol) were taken up in DMF (5 mL). Iodomethane (0.15 mL, 2.4 mmol) was added and the resulting mixture was stirred for 18 h. Water was added, and the resulting solids were filtered and washed with additional water to provide crude 7-bromo-1,4,4-trimethyl-3,4-dihydroquinolin-2(1H)-one that was used without further purification.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09376441B2
Source datasetuspto-grants-2016_06
ORD IDord-219c66806e1645749a020632c3461177
Source noteuspto-grants-2016_06