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On the Photochromism of Spiro[cyclohexadiene-dihydroacridines]

✍ Scribed by T. Häupl; T. Zimmermann; R. Hermann; O. Brede

Book ID
111836407
Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
109 KB
Volume
71
Category
Article
ISSN
0031-8655

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✍ Thomas Zimmermann; Ulrich Abram; Klaus Schmidt 📂 Article 📅 1998 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 501 KB

## Abstract 2,4,6‐Triarylpyrylium salts 1 react with the __in situ__ generated anhydrobase of 9,10‐dimethylacridinium methosulfate (2a) in the presence of anhydrous sodium acetate in ethanol by a 2,5‐[C~4~+C~2~] pyrylium ring transformation to give the hitherto unknown 6‐aroyl‐3,5‐diaryl‐10′‐methyl