39806-13-8Relevant articles and documents
A convenient method for the lewis base-catalyzed synthesis of α,β-unsaturated carboxylic esters using trimethylsilylketene ethyl trimethylsilyl acetal and carbonyl compounds
Michida, Makoto,Mukaiyama, Teruaki
, p. 704 - 705 (2008)
A highly useful method for the synthesis of α,β-unsaturated carboxylic esters from various carbonyl compounds that uses trimethylsilylbetene ethyl trimethylsilyl acetal in the presence of a Lewis base catalyst such as acetate salts was established. This procedure gives the corresponding esters in high yields with excellent E stereoselectivity under mild conditions. Copyright
Synthesis of Bidentate Nitrogen Ligands by Rh-Catalyzed C-H Annulation and Their Application to Pd-Catalyzed Aerobic C-H Alkenylation
Kim, Hyun Tae,Kang, Eunsu,Kim, Minkyu,Joo, Jung Min
supporting information, p. 3657 - 3662 (2021/05/10)
A new class of bidentate ligands was prepared by a modular approach involving Rh-catalyzed C-H annulation reactions. The resulting conformationally constrained ligands enabled the Pd-catalyzed C-H alkenylation at electron-rich and sterically less hindered positions of electron-rich arenes while promoting the facile oxidation of Pd(0) intermediates by oxygen. This newly introduced ligand class is complementary to the ligands developed for Pd-catalyzed oxidative reactions and may find broad application in transition-metal-catalyzed reactions.
Para-Selective C-H Olefination of Aniline Derivatives via Pd/S,O-Ligand Catalysis
Naksomboon, Kananat,Poater, Jordi,Bickelhaupt, F. Matthias,Fernández-Ibá?ez, M. ángeles
supporting information, p. 6719 - 6725 (2019/05/06)
Herein we report a highly para-selective C-H olefination of aniline derivatives by a Pd/S,O-ligand-based catalyst. The reaction proceeds under mild reaction conditions with high efficiency and broad substrate scope, including mono-, di-, and trisubstituted tertiary, secondary, and primary anilines. The S,O-ligand is responsible for the dramatic improvements in substrate scope and the high para-selectivity observed. This methodology is operationally simple, scalable, and can be performed under aerobic conditions.
