A simple and efficient protocol for a palladium-catalyzed ligand-free Suzuki reaction at room temperature in aqueous DMF
作者:Chun Liu、Qijian Ni、Fanying Bao、Jieshan Qiu
DOI:10.1039/c0gc00176g
日期:——
palladium-catalyzed ligand-free Suzuki reaction of aryl bromides with arylboronic acids in aqueous N,N-dimethylformamide (DMF) in the presence of K2CO3 and a catalytic amount of PdCl2 in air at room temperature. It is noteworthy that the volume ratio of water–DMF and base play important roles in the reaction, and various functional groups are tolerated under the optimized conditions. Furthermore, this
已经开发了一种方便,有效和温和的方案,用于 钯催化 配体-自由的 铃木反应 水溶液中芳基溴化物与芳基硼酸的比较 N,N-二甲基甲酰胺在室温下在空气中存在K 2 CO 3和催化量的PdCl 2的条件下(DMF)。值得注意的是体积比水–DMF和碱在反应中起重要作用,并且在优化条件下可以耐受各种官能团。此外,该协议可以扩展到氮基杂芳基卤化物与芳基硼酸的产率中等至优异。
A General and Highly Efficient Method for the Construction of Aryl-Substituted N-Heteroarenes
作者:Chun Liu、Na Han、Xiaoxiao Song、Jieshan Qiu
DOI:10.1002/ejoc.201000962
日期:2010.10
A general, simple and highlyefficientmethod has been developed for the Pd(OAc) 2 -catalyzed ligand-free and aerobic Suzuki reaction of N-heteroaryl halides, which is strongly dependent on the molecular structure of solvent.
COMPOUNDS AND METHODS FOR TREATING INFLAMMATORY AND FIBROTIC DISORDERS
申请人:Kossen Karl
公开号:US20090318455A1
公开(公告)日:2009-12-24
Disclosed are compounds and methods for treating inflammatory and fibrotic disorders, including methods of modulating a stress activated protein kinase (SAPK) system with an active compound, wherein the active compound exhibits low potency for inhibition of the p38 MAPK; and wherein the contacting is conducted at a SAPK-modulating concentration that is at a low percentage inhibitory concentration for inhibition of the p38 MAPK by the compound. Also disclosed are derivatives and analogs of pirfenidone, useful for modulating a stress activated protein kinase (SAPK) system.
Scope and limitations of the synthesis of functionalized quinolizidinones and related compounds by a simple precursor approach via addition of lithium allylmagnesates to 2-pyridones and RCM as key steps
作者:Jacek G. Sośnicki、Łukasz Struk、Tomasz Idzik、Gabriela Maciejewska
DOI:10.1016/j.tet.2014.09.043
日期:2014.11
The scope and limitations of the simple synthesis of functionalized quinolizidin-4-ones by chemoselective N-alkenylation of NH pyridin-2(1H)-ones (2-pyridones), regioselective addition of lithium allyl(di-n-butyl)magnesates(1-) to N-alkenylpyridin-2(1H)-ones, followed by ring closing metathesis (RCM) is described. A number of functionalizations introduced into quinolizidin-4-one rings demonstrated
通过N H吡啶2(1 H)-酮(2-吡啶酮)的化学选择性N-烯基化,区域选择性加成烯丙基锂(二-正丁基)的化学合成N吡啶基简单地合成官能化的喹啉并丁4-酮的范围和局限性将镁酸盐(1-)转变为N-烯基吡啶-2(1 H)-,然后进行闭环复分解(RCM)。引入喹喔啉-4-酮环的许多功能化表明了支架合成中提出的策略的高前景。还介绍了它们扩展到吡啶并[1,2 - a ]氮杂环庚烷-4-酮和吡啶并[1,2 - a ]偶氮星-4-酮衍生物的合成以及螺环稠合化合物的合成。