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
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.
[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.
Heteroaryl Ethers by Oxidative Palladium Catalysis of Pyridotriazol-1-yloxy Pyrimidines with Arylboronic Acids
作者:Sujata Bardhan、Sumrit Wacharasindhu、Zhao-Kui Wan、Tarek S. Mansour
DOI:10.1021/ol900592b
日期:2009.6.18
The oxidativepalladium-catalyzed cross-coupling of pyrimidines containing pyridotriazol-1-yloxy (OPt) as either a urea or an amide functional group with arylboronic acids in the presence of Cs2CO3 in DME containing 0.6−1.0% H2O is described for the preparation of heteroaryl ethers. The bromo substitution in the case of 3-(5-bromo-pyrimidin-2-yloxy)-3H-[1,2,3]triazolo[4,5-b]pyridine 1 could serve as
在含有0.6-1.0%H 2 O的DME中,在Cs 2 CO 3存在下,含吡啶三唑-1-基氧基(O Pt)作为脲或酰胺官能团的嘧啶与芳基硼酸的氧化钯催化交叉偶联。描述了制备杂芳基醚的方法。在3-(5-溴-嘧啶-2-基氧基)-3 H- [1,2,3]三唑并[4,5- b ]吡啶1的情况下,溴取代可作为进一步处理的手段,例如作为Suzuki偶联剂,用于连接各种芳基。