A new synthesis of symmetrical 2,5-disub
β
Fouad Bentiss; Michel LagrenΓ©e
π
Article
π
1999
π
Journal of Heterocyclic Chemistry
π
English
β 182 KB
π 1 views
## Abstract Several new 2,5βdisubstituted 1,3,4βoxadiazoles have been synthesized in good yields by reaction of aromatic acids with hydrazine dihydrochloride in a mixture of orthophosphoric acid, phosphorus pentoxide and, in general, with addition of phosphorus oxychloride to the reaction mixture.