Carboxylate-Assisted Iridium-Catalyzed C−H Amination of Arenes with Biologically Relevant Alkyl Azides
作者:Tao Zhang、Xuejiao Hu、Zhen Wang、Tiantian Yang、Hao Sun、Guigen Li、Hongjian Lu
DOI:10.1002/chem.201504880
日期:2016.2.24
wide substrate scope is reported. Benzamides with electron‐donating and ‐withdrawing groups and linear, branched, and cyclic alkyl azides are all applicable. Cesium carboxylate is crucial for both reactivity and regioselectivity of the reactions. Many biologically relevant molecules, such as amino acid, peptide, steroid, sugar, and thymidine derivatives can be introduced to arenes with high yields and
A photoinduced iron-catalyzed ipso-nitration of aryl halides with KNO2 has been developed, in which aryl iodides, bromides, and some of arylchlorides are feasible. The mechanism investigations show that the in situ formed iron complex by FeSO4, KNO2, and 1,10-phenanthroline acts as the light-harvesting photocatalyst with a longer lifetime of the excited state, and the reaction undergoes a photoinduced
A straightforward and general method has been developed for the synthesis of phthalimide derivatives from 2-iodobenzamides and PPh3/I2/HCOOH in the presence of a catalytic amount of Pd(OAc)2. The reaction results demonstrate that PPh3/I2/HCOOH is a facile, efficient and safe CO source. The whole process is carried out in toluene at 80 °C and furnishes the desired products in good to excellent yields
已经开发了一种简单且通用的方法,用于在催化量的Pd(OAc)2存在下由2-碘联苯甲酰胺和PPh 3 / I 2 / HCOOH合成邻苯二甲酰亚胺衍生物。反应结果表明,PPh 3 / I 2 / HCOOH是一种简便,高效,安全的CO源。整个过程在80°C的甲苯中进行,并以优异的产率提供了所需的产品。
Divergent Palladium Iodide Catalyzed Multicomponent Carbonylative Approaches to Functionalized Isoindolinone and Isobenzofuranimine Derivatives
作者:Raffaella Mancuso、Ida Ziccarelli、Donatella Armentano、Nadia Marino、Salvatore V. Giofrè、Bartolo Gabriele
DOI:10.1021/jo500281h
日期:2014.4.18
formation of 3-[(dialkylcarbamoyl)methylene]isoindolin-1-ones through the intermediate formation of the corresponding 2-ynamide derivatives followed by intramolecular nucleophilic attack by the nitrogen of the benzamide moiety on the conjugated triple bond. On the other hand, 3-[(alkoxycarbonyl)methylene]isobenzofuran-1(3H)imines were selectively obtained when the oxidative carbonylation of 2-alkynylbenzamides
Mechanochemical Ritter Reaction: A Rapid Approach to Functionalized Amides at Room Temperature
作者:Irena Dokli、Matija Gredičak
DOI:10.1002/ejoc.201500051
日期:2015.4
A fast and efficient mechanochemicalRitterreaction between alcohols and nitriles under mild conditions is demonstrated. The reaction proceeds rapidly at roomtemperature in a solvent-free or low-solvent environment, utilizing a Bronsted acid catalyst. Its general application has been verified through a substrate screening investigation comprising a wide range of functionalized nitriles, as well as