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Synthesis of N-(4-Aminophenyl)monoazacrown Ethers.

✍ Scribed by Wei Zeng; Ying Du; Hongbo Li; Xiaoxia Lu; Shengying Qin

Book ID
101949498
Publisher
John Wiley and Sons
Year
2003
Weight
133 KB
Volume
34
Category
Article
ISSN
0931-7597

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