
%0 Journal Article
%A Black, DS 
%A Strauch, RJ 
%T Nitrones and Oxaziridines. XLI. Chromophoric Systems Based on 1-Pyrroline 1-Oxides and 2H-Pyrrole 1-Oxides
%J Australian Journal of Chemistry
%D 1991/09/01
%V 44
%N 9
%P 1217-1225
%K 
%R https://doi.org/10.1071/CH9911217
%U https://www.publish.csiro.au/paper/CH9911217 
%X 1-Pyrroline 1-oxides and 2H-pyrrole 1-oxides have been shown to be suitable compounds for the development of extended chromophoric systems. 1-Pyrroline 1-oxides (31, (5) and (7) have conjugated systems in which a nitrone group is conjugatively linked to a dimethylamino group. The 2H-pyrrole 1-oxides (10), (13), (14) and (19) provide cross-conjugated systems incorporating the same structural features. The most extensive delocalization arises in the distyryl compound (19), which on protonation gives an extended cyanine chromophore. The bis nitrone (21) shows a chromophore with nitrone groups at each end of the conjugated system. Some general structural principles affecting the chromophoric systems are discussed. 
