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Photolysis of sterically protected bicyclic 1,2,3-selenadiazole

✍ Scribed by Wataru Ando; Yorio Kumamoto; Norihiro Tokitoh

Publisher: Elsevier Science
Year: 1986
Tongue: French
Weight: 215 KB
Volume: 27
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)85410-6

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✦ Synopsis

The photolysis of sterically protected 1,2,3-selenadiazole in the presence of olefin was studied.

The regioselective cycloadducts were obtained via the initially formed zwitter-ionic intermediate.

The photolysis of the 1,2,3-selenadiazole ring system (1) has attracted much attention from a viewpoint of studying the character of 2 and q.'-6' However, no chemistry has been reported for the intermolecular reaction so far as we know probably due to the highly reactive intermediates resulting from the lack of effective protection.

In most cases the intermediates such as 2, 3,

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