PEREIRA, DAVID E.;PETRIC, ANDREJ;LEONARD, NELSON J., TETRAHEDRON, 44,(1988) N 11, 3149-3158
作者:PEREIRA, DAVID E.、PETRIC, ANDREJ、LEONARD, NELSON J.
DOI:——
日期:——
Syntheses, structures, and properties of dipyridazino-fused 1 ,3,4,6-tetraazapentalenes
作者:David E. Pereira、Andrej Petric、Nelson J. Leonard
DOI:10.1016/s0040-4020(01)85946-9
日期:1988.1
,3':1' ,2' imidazo[4',5',:4,5] imidazo-[1,2-]pyridazine (2a) and the unsubstituted “parent” 2b have been synthesized. The chloro groups of 2a Were found to be easily displaced by a variety of nucleophiles to provide the 2,9-disubstituted compounds 7–12. A single crystal X-raystructuredetermination of the 2,9-dimethoxy-substituted compound 7 revealed the existence of two crystallographically independent