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Diphenyl diselenide-promoted radical addition of benzeneselenol to acetylenes

✍ Scribed by Akiya Ogawa; Ryoichi Obayashi; Masahito Sekiguchi; Teruyuki Masawaki; Nobuaki Kambe; Noboru Sonoda

Book ID
104224682
Publisher
Elsevier Science
Year
1992
Tongue
French
Weight
281 KB
Volume
33
Category
Article
ISSN
0040-4039

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✦ Synopsis

Diphenyl diselenide promotes the rudicul addition of benzeneselenol to inactivated acetylenes upon irradiation through Pyrex with a tungsten lump. The addition may proceed by a radical chain mechanism that involves ph~n_y!ylsaleo radical (PhSe-) as the key species, generated by the photolysis of(PhSe,J2.

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## Abstract magnified image For the first time, a mild and efficient procedure was developed for the conjugate addition of __α__,__β__‐unsaturated compounds to benzeneselenol providing __β__‐(phenylseleno)‐substituted compounds (__Scheme__). The reaction was promoted by __β__‐cyclodextrin, proceed