A decarboxylative approach for regioselective hydroarylation of alkynes
作者:Jing Zhang、Ruja Shrestha、John F. Hartwig、Pinjing Zhao
DOI:10.1038/nchem.2602
日期:2016.12
group that activates one of several aromatic C–H bonds. Here we report a new catalytic method for regioselective alkyne hydroarylation with benzoicacid derivatives during which the carboxylate functionality directs the alkyne to the ortho-C–H bond with elimination in situ to form a vinylarene product. The decarboxylation stage of this tandem sequence is envisioned to proceed with the assistance of
Palladium-catalyzed hydroarylation of alkynes with arylboronic acids
作者:Xiaoling Xu、Jiuxi Chen、Wenxia Gao、Huayue Wu、Jinchang Ding、Weike Su
DOI:10.1016/j.tet.2010.01.086
日期:2010.3
Reaction of symmetrical and unsymmetrical alkynes with arylboronicacids, using PdCl2 as catalyst source and i-Pr2NPPh2 as ligand, afforded trisubstituted alkenes with regioselectivity in good to excellent yields without a common additional acetic acid. Its efficiency has been demonstrated by its good functional groups, high yield and crowded substrates.
Ruthenium(II)-Catalyzed Decarboxylative C−H Activation: Versatile Routes to<i>meta</i>-Alkenylated Arenes
作者:N. Y. Phani Kumar、Alexander Bechtoldt、Keshav Raghuvanshi、Lutz Ackermann
DOI:10.1002/anie.201600490
日期:2016.6.6
Ruthenium(II) bis(carboxylate)s proved highly effective for two decarboxylative C−Halkenylationstrategies. The decarboxylation proceeded efficiently at rather low temperatures. The unique versatility of the decarboxylative ruthenium(II) catalysis is reflected in the oxidative olefinations with alkenes as well as the redox‐neutral hydroarylations of alkynes.