Stereoselective Synthesis of Multisubstituted Butadienes through Directed Mizoroki−Heck Reaction and Homocoupling Reaction of Vinyl(2-pyridyl)silane
journal contributionposted on 14.10.2004 by Kenichiro Itami, Yousuke Ushiogi, Toshiki Nokami, Youichi Ohashi, Jun-ichi Yoshida
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We have developed the homocoupling reaction of alkenyl(2-pyridyl)silanes mediated by CuI and CsF, in which the strong directing effect of the 2-pyridyl group was observed. The homocoupling reaction was successfully integrated with the Mizoroki−Heck reaction of vinyl(2-pyridyl)silane with aryl halides, enabling a rapid and stereoselective synthesis of multisubstituted butadienes. From a relatively small compound library, it was possible to detect a number of fluorescent butadienes with a wide range of fluorescence color variations (blue to reddish-orange).