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Reactions of thiopyrylium cations with amines

โœ Scribed by Yoshida, Zenichi; Sugimoto, Hirohiko; Sugimoto, Toyonari; Yoneda, Shigeo


Book ID
126088560
Publisher
American Chemical Society
Year
1973
Tongue
English
Weight
563 KB
Volume
38
Category
Article
ISSN
0022-3263

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Photooxygenation of triphenyl pyrylium a
โœ Zen-ichi Yoshida; Toyonari Sugimoto; Shigeo Yoneda ๐Ÿ“‚ Article ๐Ÿ“… 1971 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 181 KB

The formal replacements of a -CH= group of benzene by -A= and -"s= groups give 6,, non-benzenoid aromatic systems, pyrylium and thiopyrylium cations, respectively. Both the cations are supposed to be resonance hybrids of Kekulg-type structures (A) and carbonium ion structures (B) in the ground stat