N-bromobutanimide → 2-(Bromomethyl)-3-chloro-1,1'-biphenyl

Beteiligte Stoffe

Reaktionsschritte

A stirred solution of 3-chloro-2-methyl-[1,1'-biphenyl] (13.5 g, 0.067 mole) and N-bromosuccinimide (11.8 g, 0.067 mole) in 125 ml of carbon tetrachloride was irradiated and heated to reflux for 61/2 hours with a 250 watt brooder lamp. The light/heat source was turned off and the reaction mixture stirred at room temperature for approximately 64 hours. The reaction mixture was again irradiated and heated for two hours with the brooder lamp. The mixture was cooled, a solid precipitate filtered off, and the filter cake washed with two 50 ml portions of carbon tetrachloride. The filtrate was washed with saturated aqueous sodium chloride solution, dried over anhydrous magnesium sulfate, and filtered. The filtrate was evaporated under reduced pressure to give 2-bromomethyl-3-chloro-[1,1'-biphenyl] as an oil.

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