Decarboxylative Arylation of Pyridine 1-Oxides and Anilides with Benzoic Acid via Palladium-Catalyzed C-H Functionalization
作者:Minoo Dabiri、Seyed Iman Alavioon、Siyavash Kazemi Movahed
DOI:10.1002/ejoc.201801373
日期:2019.2.21
A novel method for palladium‐catalyzed decarboxylative ortho C–H bond arylation of pyridine 1‐oxides and anilides with benzoic acids as aryl sources are described.
本文介绍了一种新颖的钯-氧化物和苯甲酰苯与苯甲酸作为芳基来源的钯催化脱羧邻C-H键芳基化的新方法。
Palladium-catalyzed regio- and chemoselective direct desulfitative arylation of anilides with arylsulfonyl chlorides
作者:Ebrahim Kianmehr、Arezoo Tanbakouchian
DOI:10.1016/j.tet.2017.07.022
日期:2017.9
A straightforward and practical palladium-catalyzed regioselective arylation of anilides is described. This method provides a new approach to prepare 2-aminobiaryls, which are valuable precursors for the synthesis of various N-containing heterocycles, using arylsulfonyl chlorides as readily available arylating agents.
Remote amide-directed palladium-catalyzed benzylic C–H amination with N-fluorobenzenesulfonimide
作者:Tao Xiong、Yan Li、Yunhe Lv、Qian Zhang
DOI:10.1039/c0cc02175j
日期:——
An unprecedented remote amide-directed palladium-catalyzedintermolecularhighly selective benzylic C-H amination with N-fluorobenzenesulfonimide is developed, which represents the first direct benzylic C-H amination with a non-nitrene nitrogen source. This methodology provides a novel approach to circumvent the common ortho aromatic C-H selectivity in directed palladium catalyzed C-H functionalization
Ligand-Controlled <i>Para</i>-Selective C–H Arylation of Monosubstituted Arenes
作者:Hui Xu、Ming Shang、Hui-Xiong Dai、Jin-Quan Yu
DOI:10.1021/acs.orglett.5b01802
日期:2015.8.7
In a Pd-catalyzed double C-H activation reaction, a pyridine-type ligand is identified, for the first time, to enable a highly para-selective C-H arylation of monosubstituted arenes. Excellent para-selectivity is achieved with a variety of arenes containing alkyl, methoxyl, and halo substituents.
Copper-Catalyzed Dehydrogenative Cross-Coupling Reactions of N-para-Tolylamides through Successive CH Activation: Synthesis of 4H-3,1-Benzoxazines
作者:Tao Xiong、Yan Li、Xihe Bi、Yunhe Lv、Qian Zhang
DOI:10.1002/anie.201101391
日期:2011.7.25
A novel annulation reaction of readily available tolylamides was catalyzed by Cu(OTf)2 in the presence of Selectfluor and water through successive intermolecular CH activated dehydrogenativecross‐coupling reactions of benzylic methyl C(sp3)H and aromatic C(sp2)H bonds, and subsequent intramolecular CO bond formation (see scheme).