Nitration of dithieno[3,2-b:3′,2′-d]pyridine and dithieno[3,2-b:3′,4′-d]pyridine |
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Authors: | K lm n J. Szab ,Salo Gronowitz |
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Affiliation: | Kálmán J. Szabó,Salo Gronowitz |
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Abstract: | Nitration of dithieno[3,2-b:3′,2′-d]pyridine ( 4 ) and dithieno[3,2-b:3′,4′-d]pyridine ( 5 ) has been studied. Nitration of 4 occurred in both positions of the C ring, while 5 was predominantly substituted on the 3,4-fused ring. The structures of the nitro derivatives were proven by extensive use of 1H and 13C nmr spectroscopy. |
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