title: Thiadiazole formation rather than cyclodesulphurization of N-(3.4-dimethoxybenzylidene)-N'-thiobenzoyl hydrazine into phthalazine derivatives with mercuric chloride.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D002712:Chlorides; D006571:Heterocyclic Compounds; D006834:Hydrazines; D008628:Mercury; D013844:Thiazoles
chemical_list: D002712:Chlorides; D006571:Heterocyclic Compounds; D006834:Hydrazines; D013844:Thiazoles; D008628:Mercury