5-(3-chloro-5-trifluoromethyl-2-pyridyloxy)benzo-2,1,3-oxadiazole N-oxide 、 、
二氯化硫 以to give 5-(3-chloro-5-trifluoromethyl-2-pyridyloxy)benzo-2,1,3-thiadiazole and 5-(3-chloro-5-trifluoromethyl-2-pyridyloxy)benzo-2,1,3-thiadiazole N-oxide的产率得到5-(3-chloro-5-trifluoromethyl-2-pyridyloxy)benzo-2,1,3-thiadiazole