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 porphyrin as efficient catalysts for esterification of allyl sp3 C H bond with carboxylic acid
作者:Ming-Feng Xiong、Atif Ali、Waseem Akram、Hao Zhang、Li-Ping Si、Hai-Yang Liu
DOI:10.1016/j.catcom.2019.04.001
日期:2019.5
We described that copper 5,10,15,20-tetrakis (ethoxycarbonyl)porphyrin (TECP) catalyzed oxidative cross dehydrogenative coupling of allyl sp3 CH bond with acid for the synthesis of allyl esters in a homogeneous system. This reaction proceeded with broad substrate scope and good functional group tolerance. In the gram-level test, the turnover number (TON) reached to 8100 at 0.01 mol% catalyst loading
我们描述了5,10,15,20-四(乙氧基羰基)卟啉铜(TECP)催化烯丙基sp 3 C H键与酸的氧化交叉脱氢偶联,用于在均相系统中合成烯丙基酯。该反应在宽的底物范围和良好的官能团耐受性下进行。在克级测试中,在催化剂负载量为0.01 mol%时,周转率(TON)达到8100,产率为81%。
Ultrasound-promoted synthesis of a copper–iron-based catalyst for the microwave-assisted acyloxylation of 1,4-dioxane and cyclohexene
作者:Pablo Macías-Benítez、Alfonso Sierra-Padilla、M. Pilar Yeste、José María Palacios-Santander、Laura Cubillana-Aguilera、José M. Gatica、Hilario Vidal、Francisco M. Guerra、F. Javier Moreno-Dorado
DOI:10.1039/d2ob02117j
日期:——
A copper–iron-based catalyst has been prepared by a low-temperature co-precipitation and sonication method. The use of high-energy ultrasound reduces the time required for the preparation process from one workweek to one day with respect to the catalysts obtained by conventional coprecipitation and thermal treatment methods. The resulting material has been characterized at compositional, textural, structural
Tetrabutylammonium Iodide Catalyzed Synthesis of Allylic Ester with <i>tert</i>-Butyl Hydroperoxide as an Oxidant
作者:Erbo Shi、Ying Shao、Shulin Chen、Huayou Hu、Zhaojun Liu、Jie Zhang、Xiaobing Wan
DOI:10.1021/ol3013606
日期:2012.7.6
A metal-free C H oxidation for the construction of allylic esters has been developed. The use of a commercially available and inexpensive catalyst and oxidant, and readily available starting materials, coupled with the operational simplicity of the reaction, renders the methodology a useful alternative to other approaches typically employed in the synthesis of allylic esters.