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A New and simple synthesis of 2-aryl-4,9-dihydrocyclohepta[b]pyran-4,9-diones

✍ Scribed by Dao-Lin Wang; Zhong-Tian Jin; Kimiaki Imafuku


Book ID
112129620
Publisher
Journal of Heterocyclic Chemistry
Year
1990
Tongue
English
Weight
104 KB
Volume
27
Category
Article
ISSN
0022-152X

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Synthesis of Dialkyl 2-(Alkylamino)-4,9-
✍ 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