Palladium-Poly(3-aminoquinoline) Hollow-Sphere Composite: Application in Sonogashira Coupling Reactions
作者:Rafique Ul Islam、Sanjit K. Mahato、Sudheesh K. Shukla、Michael J. Witcomb、Kaushik Mallick
DOI:10.1002/cctc.201300131
日期:2013.8
We report on the use of palladium acetate for the synthesis of a palladium‐based polymer composite material as a catalyst for Sonogashira cross‐couplingreactions for aryl and heteroaryl of iodides and bromides.
Isolation and structural characterization of a titanacyclopropane as key intermediate in the double aryl Grignard addition to 2-(arylethynyl)pyridine derivatives
作者:Francesco Foschi、Torsten Roth、Markus Enders、Hubert Wadepohl、Eric Clot、Lutz H. Gade
DOI:10.1039/c8cc00478a
日期:——
A titanacyclopropane species, which is a key reaction intermediate in the Ti(OiPr)4-mediated double aryl Grignard addition to 1,2-di(pyridin-2-yl)ethyne and related alkynes, was isolated and fully characterized. Based on this observation a one-pot synthesis of diarylated 1,2-di(pyridin-2-yl)ethanes and 2-(1,2,2-triarylvinyl)-pyridines was developed, including the tetraarylation of V-shaped 2,6-bis
Enyne ring-closing metathesis on heteroaromatic cations
作者:Ana Núñez、Ana M. Cuadro、Julio Alvarez-Builla、Juan J. Vaquero
DOI:10.1039/b602420c
日期:——
Cationic heteroaromatic enynes have been employed as substrates in enyne ring-closing metathesis, under an atmosphere of ethylene and using the Hoveyda-Grubbs catalyst, for the first time; the reaction affords new 1-vinyl- and 2-vinyl-substituted 3,4-dihydroquinolizinium salts, useful precursors for biologically relevant cations based on the quinolinizium system.
A Novel Palladium-Catalyzed Cross-Coupling of Thiomethylated Alkynes with Functionalized Organozinc Reagents
作者:Paul Knochel、Laurin Melzig、Jérémy Stemper
DOI:10.1055/s-0029-1218734
日期:2010.6
A range of methylthio-substituted acetylenes undergo smooth palladium-catalyzed cross-coupling reactions with functionalized aryl-, heteroaryl-, and alkylzinc reagents using the Pd(OAc)2/DPE-Phos catalytic system at 25 or 50 ˚C without the need for copper salts. alkynes - cross-coupling - organometallic reagents - palladium - zinc
An anthraquinone-based Cu(I) cyclic trinuclear complex for photo-catalyzing C-C coupling reactions
作者:Yu-Mei Wang、Kai-Ming Mo、Xiao Luo、Ri-Qin Xia、Jing-Yi Song、Guo-Hong Ning、Dan Li
DOI:10.1007/s11426-023-1777-y
日期:2023.12
organic synthesis, yet remains highly challenging. In this article, an anthraquinone-based copper(I) cyclic trinuclear complex (1) was designed and it featured strong visible light absorption, high charge separation efficiency and photochemical properties. Complex 1 as a heterogeneous photocatalyst can efficiently catalyze homo-coupling of terminal alkynes and denitrification-oxidative coupling reaction