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Synthesis of Substituted Cyclopentadienylidenepyrans and Tetramethyl 7,8,9,10-Sesquifulvalenetetracarboxylate

✍ Scribed by Dr. G. Seitz


Publisher
John Wiley and Sons
Year
1967
Tongue
English
Weight
241 KB
Volume
6
Category
Article
ISSN
0044-8249

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The fourteen-membered ring of 7,7,12,12-tetramethyl-1,4-(R,S) isomer 18a revealed a transannular interaction between the dioxaethane bridge and the dicarbonyl moiety. dioxacyclotetradecane-8,9,10,11-tetrone (4) was built up from 1,2-bis(2Ј-chloroethoxy)ethane, two units derived from Calculations (HF