Facile Synthesis, Fluorescence, and Photochromism of Novel Helical Pyrones and Chromenes
摘要:
[GRAPHICS]Aryl coumaryl ethylenes undergo oxidative photocyclization readily to yield helical pyrone-annulated condensed aromatics. The pyrones are conveniently converted to the corresponding photochromic diphenylpyrans/chromenes. Both pyrones and chromenes exhibit helicity-dependent fluorescence efficiency and persistence, respectively.
Facile Synthesis, Fluorescence, and Photochromism of Novel Helical Pyrones and Chromenes
摘要:
[GRAPHICS]Aryl coumaryl ethylenes undergo oxidative photocyclization readily to yield helical pyrone-annulated condensed aromatics. The pyrones are conveniently converted to the corresponding photochromic diphenylpyrans/chromenes. Both pyrones and chromenes exhibit helicity-dependent fluorescence efficiency and persistence, respectively.