Photochemical studies: Chromones, bischromones and anthraquinone derivatives

Abstract

Photochemical reaction is a chemical reaction initiated by the absorption of energy in the form of light resulting in different types of reaction. Chromones, bischromones and anthraquinones are the bichromophoric molecules which contain the carbonyl group and double bond in conjugation. Photochemical reactions of these compounds result in the formation of such molecules which are not obtained via conventional methods. This review article describes the photochemical transformations of chromones, bischromones and anthraquinone derivatives and here main emphasis has been laid upon the intramolecular photochemical H-abstraction reactions that provide many exotic heterocyclics as the final photoproducts. ª 2014 Production and hosting by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/).

A selective chromone‐based colorimetric chemosensor for detecting Cu2+ in near‐perfect aqueous solution and test kit

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Novel bisbenzopyronopyran derivatives: photochemical synthesis and their in‐vitro antimicrobial studies

“…The chromone derivatives have been found to exhibit many interesting photoreactions like photodimerization, phototautomerization, photo‐oxidation, photorearrangements, photoreduction, and photoisomerization reactions. [ 35 ] Among these photoreactions, intramolecular hydrogen‐abstractions have been successfully utilized for the generations of some unique polyheterocyclic compounds. The exhilarated interest in the syntheses and photochemistry of variously substituted chromone systems has frequently enthralled the organic photochemists in the past decades.…”

Organophotoredox-catalyzed stereoselective reductive dimerization of chromone-2-carboxylic esters

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