【摘 要】
：
An aqueous solution of hydrogen peroxide and hydrogen bromide illuminated by a 60 W incandescent light bulb serves as a source of bromine radicals.Various subst
【出 处】
：
Chinese Chemical Letters
论文部分内容阅读
An aqueous solution of hydrogen peroxide and hydrogen bromide illuminated by a 60 W incandescent light bulb serves as a source of bromine radicals.Various substituted toluenes(NO_2,Cl,Br,H,CH_3) were high selectively brominated at the benzyl position for monobromination in CH_2C1_2 at ice water with catalyst free.This simple but effective bromination of toluene derivatives with an aqueous H_2O_2-HBr system is characterized with the use of inexpensive reagents and a lower impact on the environment, which make it a good alternative to the existing bromination methods.
An aqueous solution of hydrogen peroxide and hydrogen bromide illuminated by a 60 W incandescent light bulb serves as a source of bromine radicals. Variable substituted toluenes (NO 2, Cl, Br, H, CH 3) were high selectively brominated at the benzyl position for monobromination in CH_2C1_2 at ice water with catalyst free. This simple but effective bromination of toluene derivatives with an aqueous H_2O_2-HBr system is characterized with the use of inexpensive reagents and a lower impact on the environment, which make it a good alternative to the existing bromination methods .
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