The reaction of dibromine with the heterocycles I-IV gives corresponding 3,5-dibromo derivatives, while the less selective reactions with dichlorine afforded 3,5-dichloro derivative XII only in the case of 4H-thiopyran IV and trichloro derivative of the probable formula XIII in the case of 1,4-dihydropyridine II. Dichloro derivative IX was obtained on reaction of phosphorus pentachloride with substrate I. Nitration of compounds I-IV gives 3,5-dinitroderivatives XV-XVIII, but mononitro derivatives XIX and XX were also obtained. Iodination of compounds II-IV with di-iodine was unsuccessful.
二溴与杂环化合物I-IV反应得到相应的3,5-二溴衍生物,而与二氯发生的选择性较低的反应只在4H-硫代吡喷IV和1,4-二氢吡啶II的情况下产生了3,5-二氯衍生物XII和可能式XIII的三氯衍生物。磷五氯化物与底物I反应得到二氯衍生物IX。化合物I-IV的硝化反应得到3,5-二硝基衍生物XV-XVIII,但也得到了一硝基衍生物XIX和XX。使用二碘对化合物II-IV进行碘化反应失败。