-Condensation of 3 - (3, 5-diclosalicylamido) rhodanin with phenylhydrazin to get 2-phenyl hydrazon 3 - (3, 5-diclosalicylamido) rhodanin.
Ngưng tụ 3 - (3,5 - diclosalicylamido) rhodanin với phenylhydrazin cho 2 - phenylhydrazon 3 - (3,5 - diclosalicylamido) rhodanin.