Umlagerungen von Heterocyclen, IX Mesoionische Sechsringheterocyclen, XV Ketenoide Umlagerungen mesoionischer Pyrimido [1,2-a]chinoline
作者:Thomas Kappe、Yousef Ravai、Wolfgang Stadlbauer
DOI:10.1007/bf00798326
日期:1983.2
Extended mesoionic systems: synthesis and characterization of monocyclic, polycyclic and macrocyclic pyrimidinium-olate derivatives and their photochemical behavior
irradiation with UV light to form bis(beta-lactame) structures for about two decades. Here, new mono-, poly- and macrocyclic mesoions were prepared and their photochemical rearrangement behavior was investigated. The synthesized compounds were characterized by NMR, IR, UV/Vis spectroscopy, elemental analysis and mass spectrometry. The extension of the aromatic core leads to a significant red-shift of the