Desulfurization of dibenzothiophene and dibenzothiophene sulfone via Suzuki–Miyaura type reaction: Direct access to o-terphenyls and polyphenyl derivatives
作者:Rubén Gutiérrez-Ordaz、Juventino J. García
DOI:10.1016/j.poly.2018.08.008
日期:2018.11
between the desulfurization of the corresponding substrates via a hydrodesulfurization (HDS) or by a hydrodesulfurative cross-coupling (HDSCC) reaction. Furthermore, in the absence of water sulfur-free poly-phenylic compounds were obtained in good yields as a result of a Suzuki–Miyaura type reaction, being the main product in most of the cases the corresponding o-terphenyl derivative, these products are
Synthesis of Cyclic 1-Alkenylboronates via Zr-Mediated Double Functionalization of Alkynylboronates and Sequential Ru-Catalyzed Ring-Closing Olefin Metathesis
Synthesis of novel cyclic 1-alkenylboronates is accomplished through the zirconium-mediated regio- and stereoselective double functionalization of 1-alkynylboronates and the subsequent ruthenium-catalyzed ring-closing metathesis (RCM). The obtained substituted cyclic 1-alkenylboronates are transformed into o-terphenyl and triphenylene derivatives.
.sigma.-Sulfurane chemistry. Effect of substituents on the coupling reactions
作者:Barry M. Trost、Henry C. Arndt
DOI:10.1021/ja00797a033
日期:1973.8
US4339608A
申请人:——
公开号:US4339608A
公开(公告)日:1982-07-13
Catalytic Dehydrogenative Cyclization of
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‐Teraryls under pH‐Neutral and Oxidant‐Free Conditions
作者:Tatsuhiro Tsukamoto、Guangbin Dong
DOI:10.1002/anie.202004719
日期:2020.8.24
A cobaloxime‐catalyzed acceptorless dehydrogenative cyclization of o‐teraryls was developed. In stark contrast to the established methods such as the Scholl or Mallory reactions, this method does not require any strong acids or oxidants, and shows high atom economy and a broad substrate scope. It operates at near room temperature with light as the source of energy. Acid‐ or oxidant‐sensitive functional