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Stereospecific (2π+2π) photocycloaddition of arylalkenes to pyrene via exciplex: formation of 1:1- and 2:1-cycloadducts

✍ Scribed by Kazuhiko Mizuno; Hajime Maeda; Yohtaro Inoue; Akira Sugimoto; Luc P Vo; Richard A Caldwell *

Book ID: 104210431
Publisher: Elsevier Science
Year: 2000
Tongue: French
Weight: 116 KB
Volume: 41
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)00718-8

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✦ Synopsis

Irradiation of benzene solutions containing pyrene and electron-de®cient arylalkenes such as E-and Zmethyl cinnamates aorded (2p+2p) photocycloadducts including 1:2-cycloadduct in high yields in a stereospeci®c and endo-selective manner. Sandwich-type singlet exciplexes between pyrene and arylalkenes were proposed as reactive intermediates.

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