Rapid construction of multisubstituted olefin structures using vinylboronate ester platform leading to highly fluorescent materials.
[reaction: see text] A catalytic one-pot triarylation on the C=C core of vinylboronate pinacol ester (1) produces extended pi-systems based on a multisubstituted olefin structure very rapidly. We established an efficient protocol for the Pd-catalyzed double C-H arylation of 1 with aryl halides, which was successfully integrated with C-B arylation with aryl halides (cross-coupling) in one pot. By using this method, several highly fluorescent materials with a wide range of color variations (blue to red) were discovered.
Itami
Kenichiro
K
Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan. itami@sbchem.kyoto-u.ac.jp
Tonogaki
Keisuke
K
Ohashi
Youichi
Y
Yoshida
Jun-ichi
J