The present invention relates to a method for preparing 5- and 6-halomethyl quinoxalines. The method comprises contacting a 5- or 6-methyl quinoxaline with a halogenating agent in the presence of a radical initiator in a solvent selected from the group consisting of fluorobenzene, difluorobenzenes, trifluorobenzenes, chlorobenzene, dichlorobenzenes, trichlorobenzenes, &agr;,&agr;,&agr;-trifluorotoluene and &agr;,&agr;,&agr;-trichlorotoluene. The method for halogenating benzylic methyl groups may also be employed to halogenate a wide variety of halomethyl heterocyclic compounds.
本发明涉及一种制备5-和6-卤代甲基喹噁啉的方法。该方法包括在选自
氟苯、二
氟苯、三
氟苯、
氯苯、二
氯苯、
三氯苯、α,α,α-
三氟甲苯和α,α,α-三
氯甲苯的溶剂中,在自由基
引发剂的存在下,将5-或6-甲基喹噁啉与卤代试剂接触。卤代苄基甲基化合物的卤代方法也可用于卤代各种卤代甲基
杂环化合物。