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Updated: Jul 19, 2026

Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach
Published on: June 10, 2021
Facile synthesis, fluorescence, and photochromism of novel helical pyrones and chromenes
Jarugu Narasimha Moorthy1, Parthasarathy Venkatakrishnan, Sanchita Sengupta
1Department of Chemistry, Indian Institute of Technology, Kanpur 208016, India. moorthy@iitk.ac.in
Abstract:
[reaction: see text] 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.
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