N-heterocyclic carbene-Pd(II)-2-methyl-4,5-dihydrooxazole complex-catalyzed highly chemoselective mono-amination of dichlorobenzenes
作者:Kai-Xin Sun、Jin-Hui Zhou、Qian-Wei He、Li-Xiong Shao、Jian-Mei Lu
DOI:10.1016/j.tet.2020.130944
日期:2020.2
The palladium-catalyzed chemoselective mono-amination of dichlorobenzenes was reported in this paper. Under the suitable conditions, allreactions involving the threeisomers of dichlorobenzenes with various secondary and primary amines in the presence of a well-defined N-heterocyclic carbene-palladium(II)-2-methyl-4,5-dihydrooxazole complex, gave the desired mono-aminated products in moderate to high
Palladium-Catalyzed Direct Arylation-Based Domino Synthesis of Annulated N-Heterocycles Using Alkenyl or (Hetero)Aryl 1,2-Dihalides
作者:Lutz Ackermann、Andreas Althammer、Peter Mayer
DOI:10.1055/s-0029-1216977
日期:2009.10
A palladium-catalyzed reaction sequence consisting of an intermolecular amination and an intramolecular direct arylation enabled highly regioselective syntheses of functionalized indoles or carbazoles and proved to be amenable to the use of inexpensive 1,2-dichloroarenes as electrophiles. arylation - catalysis - heterocycles - palladium - sequential reaction
A Facile C-N Bond Formation: One-Pot Reaction of Phenols and Amines via Smiles Rearrangement
作者:Hua Zuo、Hao Yang、Zhu-Bo Li、Dong-Soo Shin、Li-Ying Wang、Jia-Zhou Zhou、Hong-Bo Qiao、Xiao Tian、Xiao-Yan Ma
DOI:10.1055/s-0029-1219190
日期:2010.2
arylalkylamines were synthesized in high yields from 2-chlorophenols and amines, activated by chloroacetyl chloride under microwave irradiation (20―60 min) or conventional thermal conditions (3―6 h). The key transformation is believed to proceed via Smiles rearrangement by initial O-alkylation and subsequent cyclization.
Copper-Catalyzed Selective Oxidative Acylation of Secondary Anilines with Ethyl Glyoxalate: Domino Synthesis of Indoline-2,3-diones
作者:Tao Liu、Haijun Yang、Yuyang Jiang、Hua Fu
DOI:10.1002/adsc.201300044
日期:2013.4.15
A novel, easy and useful copper‐catalyzed selective acylation of secondary anilines with ethylglyoxalate has been developed, and the corresponding indoline‐2,3‐dione derivatives were prepared. The procedure comprises the sequential intermolecular copper‐catalyzed selective oxidative ortho‐site aromatic acylation of the NH group in secondary anilines and intramolecular nucleophilic attack of the NH
The present invention relates to novel benzimidazole derivatives of the general formula (I), to processes for their preparation and to their use for preparing pharmaceutical compositions for the treatment of disorders and indications associated with the EP4 receptor.