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
An efficient and selective route to hybrid trifluoromethyl-substituted γ-lactones or fused nitrogen derivatives via cascade reactions
作者:Roxana Tucaliuc、Valeriu V. Cotea、Costel Moldoveanu、Gheorghita Zbancioc、Calin Deleanu、Peter G. Jones、Ionel I. Mangalagiu
DOI:10.1016/j.tetlet.2011.09.093
日期:2011.11
A straightforward, efficient and selective route for obtaining hybrid trifluoromethyl-substituted γ-lactones and fused nitrogen heterocycles is presented. The reaction could be guided either to γ-lactones with a nitrogen-containing heterocyclic skeleton (for monocyclic systems) or to fused nitrogen heterocycles (for fused bicyclic systems). A new class of γ-lactone with a nitrogen heterocyclic skeleton
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
New pyridazine–fluorine derivatives: Synthesis, chemistry and biological activity. Part II
作者:Roxana-Angela Tucaliuc、Valeriu V. Cotea、Marius Niculaua、Cristina Tuchilus、Dorina Mantu、Ionel I. Mangalagiu
DOI:10.1016/j.ejmech.2013.04.069
日期:2013.9
A comprehensive study concerning synthesis, structure and biological activity of new pyridazine–fluorine (PYF) derivatives is presented. The first synthesis of PYF derivatives in phase-transfer catalysis (PTC) under microwave (MW) and conventional thermal heating (TH) is reported. Under MW irradiation the consumed energy decreases considerably, the amount of used solvent in liquid phase is at least