A CO<sub>2</sub>-mediated base catalysis approach for the hydration of triple bonds in ionic liquids
作者:Minhao Tang、Fengtao Zhang、Yanfei Zhao、Yuepeng Wang、Zhengang Ke、Ruipeng Li、Wei Zeng、Buxing Han、Zhimin Liu
DOI:10.1039/d1gc03865f
日期:——
approach for the activation of triplebonds in ionic liquids (ILs) with anions that can chemically capture CO2 (e.g., azolate, phenolate, and acetate), which can achieve hydration of triplebonds to carbonyl chemicals. It is discovered that the anion-complexed CO2 could abstract one proton from proton resources (e.g., IL cation) and transfer it to the CN or CC bondsvia a six-membered ring transition
在此,我们报告了一种 CO 2介导的碱催化方法,用于激活离子液体 (IL) 中的三键,其中的阴离子可以化学捕获 CO 2(例如,唑盐、酚盐和乙酸盐),从而实现三键的水合羰基化学品。发现阴离子络合的CO 2可以从质子资源(例如IL阳离子)中提取一个质子,并通过六元环过渡态将其转移到C N 或C C 键,从而实现它们的水合。特别是,四丁基鏻 2-羟基吡啶在 CO 2下对腈和含C C 键的化合物的水合显示出高效率气氛,以优异的收率提供一系列羰基化合物。这种催化方案简单、绿色、高效,开辟了一种在温和和无金属条件下通过三键水合获得羰基化合物的新方法。
Preparation of 4,5-dihydro-pyrazolo[3,4-c]pyrid-2-ones
申请人:Zhao Rulin
公开号:US20060069085A1
公开(公告)日:2006-03-30
A novel process and intermediates thereof for making 4,5-dihydro-pyrazolo[3,4-c]pyrid-2-ones of the type shown below, as well as the corresponding pyrazoles, from appropriate phenyl hydrazines is described.
These compounds can be useful as factor Xa inhibitors.
PREPARATION OF 4,5-DIHYDRO-PYRAZOLO[3,4-C]PYRID-2-ONES
申请人:Bristol-Myers Squibb Company
公开号:EP1805179A2
公开(公告)日:2007-07-11
[EN] PREPARATION OF N-ARYL PYRIDONES<br/>[FR] PREPARATION DE PYRIDONES N-ARYLE
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2006036949A2
公开(公告)日:2006-04-06
A novel process and intermediates thereof for making N-aryl pyridones of the type shown below from appropriate pyridinolates is described. These compounds are useful as intermediates for the synthesis of clinical candidates.
[EN] PREPARATION OF 4,5-DIHYDRO-PYRAZOLO[3,4-C]PYRID-2-ONES<br/>[FR] PREPARATION DE 4,5-DIHYDRO-PYRAZOLO[3,4-C]PYRID-2-ONES
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2006135425A2
公开(公告)日:2006-12-21
[EN] A novel process and intermediates thereof for making 4,5-dihydro-pyrazolo[3,4 c]pyrid-2-ones of the type shown below, as well as the corresponding pyrazoles, from appropriate phenyl hydrazines is described. O (R2b) 0-2 R1 I I 1 1-a X2 N N-,Ra' IV These compounds can be useful as factor Xa inhibitors. [FR] L'invention concerne un nouveau procédé et des intermédiaires pour la fabrication de 4,5-dihydro-pyrazolo[3,4- c]pyrid-2-ones du type présenté, ainsi que les pyrazoles correspondants, à partir d'hydrazines de phényle appropriées. Ces composés peuvent être utiles en tant qu'inhibiteurs du facteur Xa.