New pyridazine derivatives: Synthesis, chemistry and biological activity
作者:Roxana M. Butnariu、Ionel I. Mangalagiu
DOI:10.1016/j.bmc.2009.02.028
日期:2009.4
concerning synthesis, structure and biological activity of some new pyridazinederivatives. Syntheses have been done both under classical conditions and microwave [in liquid phase and interphasic transfer catalysis (PTC)]. The MW induced a remarkable acceleration for the [3+2] dipolar cycloaddition reaction of pyridazinium ylides to activated alkenes and alkynes, the yields were increased in some cases
Pyrrolodiazine derivatives as blue organic luminophores: synthesis and properties. Part 3
作者:Gheorghita N. Zbancioc、Thomas Huhn、Ulrich Groth、Calin Deleanu、Ionel I. Mangalagiu
DOI:10.1016/j.tet.2010.04.050
日期:2010.6
irradiation, in liquid phase, is reported. Under MW irradiation the yields are much higher, sometimes substantially (by almost double) and, the amount of solvent used is at least 5-fold less. The pyrrolopyridazine (PP) derivatives are very intense blue emitters and have high quantum yields (up to 90%) while pyrrolophthalazine (PHP) compounds are still intense blue emitters but the quantum yield is negligible