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Facile Synthesis, Fluorescence, and Photochromism of Novel Helical Pyrones and Chromenes

✍ Scribed by Moorthy, Jarugu Narasimha; Venkatakrishnan, Parthasarathy; Sengupta, Sanchita; Baidya, Mahiuddin

Book ID
121190073
Publisher
American Chemical Society
Year
2006
Tongue
English
Weight
207 KB
Volume
8
Category
Article
ISSN
1523-7060

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## Abstract Crowned chromenes βˆ’ four novel naphthopyrans (chromenes) bearing monoaza‐12‐crown‐4, ‐15‐crown‐5, ‐18‐crown‐6, and a noncyclic analogue at the 5‐position βˆ’ were synthesized, and their photochromism in acetonitrile was examined in the presence of alkali and alkaline‐earth metal ions. Inc