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Synthesis of 2-Aryl-3-hydroxy-4,9-dihydrocyclohepta[b]pyran-4,9-diones

✍ Scribed by Young-Zhi Jin; Zhong-Tian Jin; Kimiaki Imafuku

Book ID
112130013
Publisher
Journal of Heterocyclic Chemistry
Year
1991
Tongue
English
Weight
137 KB
Volume
28
Category
Article
ISSN
0022-152X

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✍ Javad Azizian; Ali Ramazani; Mohammad Haji 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 German ⚖ 149 KB

## Abstract Dialkyl 2‐(alkylamino)‐4,9‐dihydro‐9‐oxocyclohepta[__b__]pyran‐3,4‐dicarboxylates are prepared in a one‐pot three‐component reaction of alkyl isocyanide, dialkyl acetylenedicarboxylate, and __α__‐tropolone (=2‐hydroxycyclohepta‐2,4,6‐trienone). The reaction proceeds smoothly at room tem