Palladium-Catalyzed Solid-State Polyfluoroarylation of Aryl Halides Using Mechanochemistry
作者:Rikuro Takahashi、Tamae Seo、Koji Kubota、Hajime Ito
DOI:10.1021/acscatal.1c03731
日期:2021.12.17
products. Here, we show that solid-state high-temperature ball-milling conditions facilitate a palladium-catalyzed cross-coupling with polyfluorinated arylboronic acids and pinacol esters employing a simple catalytic system in the absence of any stoichiometric additives. This reaction exhibits a broad substrate scope and can be carried out in air, and the use of large amounts of dry and degassed organic solvents
Compounds are disclosed for the production of chemiluminescent light, particularly for the production of blue/violet light within the range of about 390 nm to less than 438 nm, and most particularly to the use of compounds composed of symmetrically and asymmetrically substituted anthracenes which are effective for increasing the production of such blue/violet light when used as fluorescers in conjunction with chemiluminescent systems. These systems utilize derivatives of 9,10-diphenylanthracene containing one or more fluorines As shown in General Formulae 1-3. The variables shown in Formulae 1-3 are defined in the specification.
Meso-Disubstituted Anthracenes with Fluorine-Containing Groups: Synthesis, Light-Emitting Characteristics, and Photostability
作者:Yoshio Matsubara、Atsushi Kimura、Yoshihiro Yamaguchi、Zen-ichi Yoshida
DOI:10.1021/ol802337v
日期:2008.12.18
Synthesis, photophysical properties, and photostability of 9,10-disubstituted anthracenes with fluorine-containing groups (FCG) are described. The values of phi(f) and lambda(em) greatly go up by the meso-substitution with FCG, and a nice corelationship between phi(f) and A(pi) (magnitude of pi conjugation length in the excited single state) is observed. The C6F5 group at the meso positions exhibits