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
Ruthenium-Catalyzed Direct CH Amidation of Arenes Including Weakly Coordinating Aromatic Ketones
作者:Jiyu Kim、Jinwoo Kim、Sukbok Chang
DOI:10.1002/chem.201301025
日期:2013.6.3
CH activation: The ruthenium‐catalyzed direct sp2 CHamidation of arenes by using sulfonyl azides as the amino source is presented (see scheme). A wide range of substrates were readily amidated including arenes bearing weakly coordinating groups. Synthetic utility of the thus obtained products was demonstrated in the preparation of biologically active heterocycles.
Rh(<scp>iii</scp>)-catalyzed direct C–H/C–H cross-coupling of quinones with arenes assisted by a directing group: identification of carbazole quinones as GSKβ inhibitors
作者:Youngtaek Moon、Yujeong Jeong、Daehyuk Kook、Sungwoo Hong
DOI:10.1039/c4ob02624a
日期:——
Rh-catalyzed direct cross-coupling of various (hetero)arenes with quinones is developed. This protocol is effective for a broad range of substrates and a wide range of directing groups.
铑催化的直接交叉偶联反应可将各种(杂)芳烃与醌进行偶联。该方案适用于广泛的底物和多种取向基团。
Clickable coupling of carboxylic acids and amines at room temperature mediated by SO<sub>2</sub>F<sub>2</sub>: a significant breakthrough for the construction of amides and peptide linkages
作者:Shi-Meng Wang、Chuang Zhao、Xu Zhang、Hua-Li Qin
DOI:10.1039/c9ob00699k
日期:——
carboxylic acids with amines was developed for the synthesis of a broad scope of amides in a simple, mild, highly efficient, robust and practical manner (>110 examples, >90% yields in most cases). The direct click reactions of acids and amines on a gram scale are also demonstrated using an extremely easy work-up and purification process of washing with 1 M aqueous HCl to provide the desired amides in
Aminocarbonylation of (Hetero)aryl Bromides with Ammonia and Amines using a Palladium/DalPhos Catalyst System
作者:Pamela G. Alsabeh、Mark Stradiotto、Helfried Neumann、Matthias Beller
DOI:10.1002/adsc.201200580
日期:2012.11.12
family were examined in a palladium-catalyzed carbonylative amination reaction using inexpensive carbon monoxide and ammonia as reagents. As a result of this survey, the Pyr-DalPhos ligand was identified as being effective for the selective aminocarbonylation of aryl bromides with ammonia, as well as primary and secondary alkylamines. A variety of primary aromatic, heteroaromatic and N-substituted benzamides