97634-83-8Relevant articles and documents
Highly efficient and economic synthesis of new substituted amino-bispyridyl derivatives via copper and palladium catalysis
Gaillard, Sylvain,Elmkaddem, Mohammed Kamal,Fischmeister, Cédric,Thomas, Christophe M.,Renaud, Jean-Luc
, p. 3471 - 3474 (2008/09/21)
A convenient route for the synthesis of a variety of amino-bispyridyl compounds is introduced. Bispyridylamines were prepared in three steps from commercially available 2,6-dibromopyridine, via a copper mediated alkylation followed by two consecutive N-arylation reactions catalyzed by copper and palladium, respectively.
DISSYMMETRY OF CERTAIN SUBSTITUTED DIPYRIDOTETRAAZAPENTALENES
Pereira, David E.,Clauson, Gary L.,Leonard, Nelson J.
, p. 4931 - 4946 (2007/10/02)
In a two-step synthesis from staring amines, a series of compounds has been prepared in which steric crowding (1b,c,d,f) was introduced into the "bay region" of pyridoimidazoimidazopyridine (1a).This forces the tetracyclic ring system into non-planarity.Two hexa-heterohelicenes 2a and b were prepared that incorporate the 1,3,4,6-tetraazapentalene ring system and provide molecular crowding in the "bay region" due to the terminal rings, which similarly distort the hexacyclic ring system from planarity.Single crystal X-ray structure determinations revealed that the compounds (1b,c,d,f,2a and b) exist as enantiomeric pairs in the crystalline state.