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A novel large thiophene-fused polycyclic aromatics 1 based on pyrene 5 has been synthesized,and its structure was confirmed by ~1H NMR,~(13)C NMR,MS,UV -vis and elemental analysis.The key steps of the synthesis involved the Stille cross-coupling reaction and followed by selectiveβ-βoxidative cyclization of pendant thienyl rings by FeCl_3 under mild conditions.
A novel large thiophene-fused polycyclic aromatics 1 based on pyrene 5 has been synthesized, and its structure was confirmed by ~ 1H NMR, ~ (13) C NMR, MS, UV-vis and elemental analysis. The key steps of the synthesis involved the Stille cross-coupling reaction followed by selective β-βoxidative cyclization of pendant thienyl rings by FeCl 3 under mild conditions.