Copper-catalyzed oxidative coupling of acids with alkanes involving dehydrogenation: facile access to allylic esters and alkylalkenes
作者:Cheng-Yong Wang、Ren-Jie Song、Wen-Ting Wei、Jian-Hong Fan、Jin-Heng Li
DOI:10.1039/c4cc09393c
日期:——
We here describe a new copper-catalyzed oxidative coupling of acids with alkanes for the selective synthesis of allylic esters and alkylalkenes. This method achieves multiple dehydrogenation and esterification, representing a new unactivated C(sp(3))-Hoxidative esterification of acids with common alkanes.
Copper porphyrin-catalyzed cross dehydrogenative coupling of alkanes with carboxylic acids: Esterification and decarboxylation dual pathway
作者:Xiao-Yan Chen、Shuang Yang、Bao-Ping Ren、Lei Shi、Dong-Zi Lin、Hao Zhang、Hai-Yang Liu
DOI:10.1016/j.tet.2021.132377
日期:2021.9
A dual-functional copper porphyrin-catalyzed cross dehydrogenative coupling (CDC) of carboxylic acids with alkanes was reported firstly. The reaction gives allylic esters or alkylalkenes depending on the carboxylic acid substrates. Copper porphyrin catalyzed CDC method has the superiority of short reaction time, good functional group tolerance, base and solvent free, producing target products in an
Copper-catalyzed oxidative dehydrogenative functionalization of alkanes to allylic esters
作者:Rakesh Mondal、Gargi Chakraborty、Kaj M. van Vliet、Nicolaas P. van Leest、Bas de Bruin、Nanda D. Paul
DOI:10.1016/j.ica.2019.119190
日期:2020.1
efficient and solvent-free method for the one-pot synthesis of allylic esters via dehydrogenation of unactivated alkanes and subsequent oxidative cross coupling with different substituted carboxylic acids. A simple, well defined and air stable Cu(II)-complex, [Cu(MeTAA)], featuring a tetraaza-macrocyclic ligand (tetramethyltetraaza[14]annulene (MeTAA)) is used as the catalyst. A wide variety of substituted
A protocol for the cobalt-catalyzed oxidative esterification of allylic/benzylic C(sp3)–H bonds with carboxylic acids was developed in this work. Mechanistic studies revealed that C(sp3)–H bond activation in the hydrocarbon was the turnover-limiting step and the in-situ formed [Co(III)]Ot-Bu did not engage in hydrogen atom abstraction (HAA) of a C–H bond. This protocol was successfully incorporated
在这项工作中,开发了一种用烯丙基/苄基C(sp 3)–H键与羧酸进行钴催化氧化酯化的方案。机理研究表明,碳氢化合物中的C(sp 3)-H键活化是限制周转的步骤,原位形成的[Co(III)] O t -Bu不参与氢的氢原子提取(HAA)。碳氢键。该方案已成功纳入避免使用NBS的β-大马烯酮合成途径。
Iron-catalyzed esterification of allylic sp 3 C–H bonds with carboxylic acids: Facile access to allylic esters
作者:Bing Lu、Fan Zhu、Dan Wang、Hongmei Sun、Qi Shen
DOI:10.1016/j.tetlet.2017.05.039
日期:2017.6
iron-catalyzed esterification of allylic sp3 C–H bonds with carboxylic acids using ionic iron(III) complexes (1–4) as a catalyst and DTBP (DTBP = di-tert-butyl peroxide) as an oxidant is achieved. A variety of allylic esters were synthesized in good to excellent yields using the ionic iron(III) complex 2 as a catalyst in a 5 mol% loading. This reaction is characterized by its high efficiency, broad substrate