Premium
Fused s ‐triazino heterocycles. XIV 8 H ‐1,3,7,8,9,10c‐hexaazacyclopenta[ a ]phenalene, 1,3,7,8,10,11c‐hexaazabenz[ de ]anthracene and 13 H ‐4,6,8,13a, 13c‐pentaazabenzo[ de ]naphthacene, three new ring systems
Author(s) -
Shaw John T.,
Fair Mark C.
Publication year - 1987
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.5570240205
Subject(s) - chemistry , medicinal chemistry , nitrile , organic chemistry
The synthesis of the title compounds 3,4 and 5 is described, using 7,9‐dibromo‐5‐tribromomethyl‐2‐ t ‐butyl‐4‐cyano‐1,3,6,9b‐tetraazaphenalene 2a as starting material. The key intermediates are 7,9‐dibromo‐2‐ t ‐butyl‐4‐cyano‐5‐hydrazino‐1,3,6,9b‐tetraazaphenalene 2b , 5‐benzamidino‐7,9‐dibromo‐2‐ t ‐butyl‐4‐cyano‐1,3,6,9b‐tetraazaphenalene 2c , and 7,9‐dibromo‐2‐ t ‐butyl‐5‐(2‐carboxyanilino)‐4‐cyano‐1,3,6,9b‐tetraazaphenalene 2e.