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Nitration of dithieno[3,2‐ b :3′,2′‐ d ]pyridine and dithieno[3,2‐ b :3′,4′‐ d ]pyridine
Author(s) -
Szabó Kálmán J.,
Gronowitz Salo
Publication year - 1993
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570300252
Subject(s) - nitration , pyridine , chemistry , ring (chemistry) , nitro , stereochemistry , nuclear magnetic resonance spectroscopy , medicinal chemistry , organic chemistry , alkyl
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 1 H and 13 C nmr spectroscopy.