Direct bromination of dithieno[3,4-b:3′,4′-d]pyridine and dithieno[2,3-b:3′,2′-d]pyridine |
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Authors: | Klmn J Szab Salo Gronowitz Mohamed A Hassan |
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Institution: | Kálmán J. Szabó,Salo Gronowitz,Mohamed A. Hassan |
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Abstract: | Bromination of dithieno3,4-b:3′,4′-d]pyridine ( 1 ) and dithieno2,3-b:3′,2′-d]pyridine ( 2 ) has been studied. Disubstitution occurred at both positions of the C ring. The substitution pattern is found to be similar to that of the nitration reaction. The structures of bromo derivatives were established by 1H and 13C nmr spectroscopy. |
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