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The synthesis of novel polycyclic heterocyclic ring system via photocyclization. 18 . Benzo[ h ]naphtho‐[1′,2′:4,5]thieno[2,3‐ c ]quinoline and benzo[ h ]naphtho‐[1′,2′:4,5]thieno[2,3‐ c ] [1,2,4]triazolo[4,3‐ a ]quinoline
Author(s) -
Luo JiannKuan,
Federspiel Ronald F.,
Castle Raymond N.
Publication year - 1996
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.5570330361
Subject(s) - chemistry , quinoline , ring (chemistry) , thiophene , stereochemistry , medicinal chemistry , organic chemistry
The synthesis of two previously unknown polycyclic ring systems, benzo[ h ]naphtho[1′2′:4,5]‐thieno[2,3‐ c ]quinoline ( 1 ) and benzo[ h ]naphtho[1′,2′:4,5]thieno[2,3‐ c ][1,2,4]triazolo[4,3‐a]quinoline ( 2 ), was achieved via oxidative photocyclization of 1‐chloro‐ N ‐(1‐naphthyl)naphtho[2,1‐ b ]thiophene‐2‐carboxamide ( 5 ). The total assignment of their 1 H and 13 C nmr spectra was determined by the concerted use of two‐dimensional nmr methods.