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1,4-Diphosphoniacyclooctene and diene salts. Their formation, hydrolysis, and attempted conversion to 1,4-diphosphacyclooctatetraenes

✍ Scribed by Aguiar, Adam M.; Nair, M. G. Raghanan


Book ID
127207290
Publisher
American Chemical Society
Year
1968
Tongue
English
Weight
438 KB
Volume
33
Category
Article
ISSN
0022-3263

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## Abstract Treatment of 2‐__tert__‐butyl‐1‐benzoselenopyrylium salts **1A** and 2‐phenyl‐1‐benzoselenopyrylium salts **1B** with an alkyl(phenyl)magnesium halide resulted in nucleophilic addition at the C‐4 position to give the corresponding 2,4‐disubstituted 4__H__‐selenochromenes **2A** and **2B