Novel synthesis of bridged phenylthienylethenes and dithienylethenes via Pd-catalyzed double-cyclization reactions of diarylhexadienynes.

Org Lett

Division of Frontier Materials Science, Graduate School of Engineering Sciences, Osaka University, and CREST, Japan Science and Technology Agency (JST), 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan.

Published: March 2006

[reaction: see text] Bridged phenylthienylethenes and dithienylethenes were synthesized via Pd-catalyzed double-cyclization reactions of (Z,Z)-1,6-diaryl-1,5-hexadien-3-ynes. Pd-catalyzed as well as photoinduced Z/E isomerization of the products were also investigated.

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http://dx.doi.org/10.1021/ol0600281DOI Listing

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