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Cyclic peroxide series. XXXVI. Thermolysis of the cyclic peroxide 4-ethylidene-3,3,5,5-tetramethyl-1,2-dioxolane. Generation and trapping of a 1,5-diradical

โœ Scribed by Adam, Waldemar; Arce, Josefina


Book ID
126915909
Publisher
American Chemical Society
Year
1975
Tongue
English
Weight
314 KB
Volume
97
Category
Article
ISSN
0002-7863

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Cycloaromatization of a non-conjugated p
โœ Kazuhiro Miyawaki; Riho Suzuki; Tomikazu Kawano; Ikuo Ueda ๐Ÿ“‚ Article ๐Ÿ“… 1997 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 234 KB

Non-conjugated tetraynes 1 undergo thennal intmmolecul~ cyclization to non-benzenoiddiradicals (23) followed by radical cycloaromatization at 25 ~C to provide 7-dehydro-5H-benzo[d]fluoreno[3,2-b]pyran monoradical (2 4) and alkyl radicals (2 5). Hydrogen abstraction of 2 4 gives 5H-benzo[d] fluoreno[