Reaction of hydrazonyl halides with (substituted) thioureas and thiosemicarbazides gives mainly 1,3,4-thiadiazolines, the stronger base being preferentially eliminated in the process. Similar reactions in presence of triethylamine give C-amino- and C-hydrazino-1,2,4-triazoles, respectively, together with the hydrazonyl sulfide.Potassium cyanide cleavage of a hydrazonyl disulfide gives the corresponding 1,3,4-thiadiazoline and thiohydrazide.
与(取代)硫脲和硫代半胱氨酸反应产生主要为1,3,4-噻二唑烷,过程中首先选择性消除较强碱。在三乙胺存在下进行类似反应,分别得到C-氨基-和C-叠氮基-1,2,4-三唑烷,以及酰肼硫醚。对偶硫醚进行氰化钾裂解可得到相应的1,3,4-噻二唑烷和硫酰肼。