Iridium-Catalyzed Synthesis of Substituted Indanones from Aromatic Carboxylates and Unsaturated Ketones
作者:Guodong Zhang、Zhiyong Hu、Giulia Bertoli、Lukas J. Gooßen
DOI:10.1021/acscatal.9b02536
日期:2019.9.6
A catalytic annulation is presented that provides straightforward, modular synthetic access to 3-substituted indanones from benzoic acids and α,β-unsaturated ketones. It is catalyzed by a bimetallic Ir/In system and proceeds via hydroarylation followed by Claisen condensation and optional retro-Claisen deacylation. The annulation may be combined into a one-pot procedure with the synthesis of the unsaturated
Benzimidazolyl Palladium Complexes as Highly Active and General Bifunctional Catalysts in Sustainable Cross-Coupling Reactions
作者:Jiancheng Zhu、Vincent N. G. Lindsay
DOI:10.1021/acscatal.9b02420
日期:2019.8.2
A family of air- and moisture-stable dinuclear palladiumcomplexes bearing 2-benzimidazolyl ligands is reported and shown to be a highly effective and general catalytic platform in diverse cross-coupling reactions. The rigidity and conformation of the ligand scaffold was readily modified via tethering of the 2-benzimidazolyl moiety to diamine ligands, resulting in significant changes in catalytic activity
Chiral 2,6-lutidinyl-biscarbene complexes of palladium
作者:Arran A. D. Tulloch、Andreas A. Danopoulos、Graham J. Tizzard、Simon J. Coles、Michael B. Hursthouse、Robyn S. Hay-Motherwell、William B. Motherwell
DOI:10.1039/b103330c
日期:——
Chiral complexes of palladium, 1, with the new tridentate
‘pincer’ ligand 2,6-lutidinyl-biscarbene (C⁁N⁁C),
have been prepared; in the solid state they exhibit helical
C2 symmetrical structures which are persistent in
solution at least up to 80 °C; the chiral nature of 1 has been
established by NMR methods using Pirkle’s acid as a chiral
discriminating agent; racemic mixtures of 1 are highly active catalysts in
Heck coupling reactions.