Condensation of 3 - (3, 5-diclosalicylamido) rhodanin with p-dimethylaminobenzal - dehyd, benzaldehyd, furfural, aldehyd salicylic to get four 5 - aryliden 3 - (3, 5-diclosalicylamido) rhodanin.
Ngưng tụ 3 - (3,5 - diclosalicylamido) rhodanin với PDAB, benzaldehyd, furfural, salicylaldehyd cho 4 dẫn chất 5 - aryliden 3 - (3,5 - diclosalicylamido) rhodanin.