Synthesis of (E)-diethyl 6,6′-(diazene-1,2-diyl)bis(5-cyano-2-methyl- 4-phenylnicotinates), a new type of 2,2′-azopyridine dyes

1. Da Silva, D.B.
2. Samadi, A.
3. Infantes, L.
4. Carreiras, M.D.C.
5. Marco-Contelles, J.