The Scope and Mechanism of Phosphonium-Mediated S<sub>N</sub>Ar Reactions in Heterocyclic Amides and Ureas
作者:Zhao-Kui Wan、Sumrit Wacharasindhu、Christopher G. Levins、Melissa Lin、Keiko Tabei、Tarek S. Mansour
DOI:10.1021/jo7020373
日期:2007.12.1
An efficient “one-step” synthesis of cyclic amidines and guanidines has been developed. Treatment of cyclic amides and ureas with benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate (BOP), base, and nitrogen nucleophiles leads to the formation of the corresponding cyclic amidines and guanidines, typically in good to excellent yields. This method has also been used to prepare heteroaryl
ureas, and cyclic imides using heteroaryl aryl ethers. The reaction involves the covalent bond-exchange reaction of N–CO and HetAr–O bonds without using metal bases and exhibits a broad applicability, giving diverse C–N-linked bi(heteroaryl)s containingfive- and six-membered heteroarenes. The N-heteroarylation of N–H azoles/azolones and pyridone proceeds at higher reaction temperatures.
[EN] HETEROARYL ETHERS AND PROCESSES FOR THEIR PREPARATION<br/>[FR] HÉTÉROARYL ÉTHERS ET LEURS PROCÉDÉS DE PRÉPARATION
申请人:WYETH CORP
公开号:WO2009058937A2
公开(公告)日:2009-05-07
The present invention relates to processes for the preparation of of heteroaryl ethers. In some embodiments, the processes relate to cross coupling reactions between triazol-1-yloxy and triazol-1-yl heterocycles with aryl boronic acids. In a further aspect, this invention also relates to compounds that are useful for the treatment of oncological diseases or disorders, and for the treatment of inflammation.
Rhodium-catalyzed synthesis of unsymmetric di(heteroaryl) compounds via heteroaryl exchange reactions
作者:Mieko Arisawa
DOI:10.1080/10426507.2019.1602621
日期:2019.7.3
activities by interacting with proteins and nucleic acids. Then, synthesis of such compounds is critical for the development of drugs. Unsymmetric HetAr-X-HetAr′ compounds were efficiently synthesized by rhodium-catalyzed heteroaryl exchangereactions, which involved equilibrium control by judicious design of organic heteroaryl reagents. This method allows synthesis of unsymmetric HetAr–O–HetAr′, HetAr–S–HetAr′
HETEROARYL ETHERS AND PROCESSES FOR THEIR PREPARATION
申请人:Mansour Tarek Suhayl
公开号:US20090291971A1
公开(公告)日:2009-11-26
The present invention relates to processes for the preparation of heteroaryl ethers. In some embodiments, the processes relate to cross coupling reactions between triazol-1-yloxy and triazol-1-yl heterocycles with aryl boronic acids. In a further aspect, this invention also relates to compounds that are useful for the treatment of oncological diseases or disorders, and for the treatment of inflammation.