Microwave-Enhanced Coupling of Carboxylic Acids with Liquid Ketones and Cyclic Ethers Using Tetrabutylammonium Iodide/<i>t</i>-Butyl Hydroperoxide
作者:Pablo Macías-Benítez、F. Javier Moreno-Dorado、Francisco M. Guerra
DOI:10.1021/acs.joc.0c00519
日期:2020.5.1
The oxidative coupling of carboxylic acids with liquid ketones and cyclic ethers has been accomplished in minutes using t-butylhydroperoxide in the presence of tetrabutylammonium iodide under microwave irradiation in the absence of a solvent. In addition to drastically shortening the reaction times, the use of microwaves resulted, in general, in yields equal to or higher than those obtained by conventional
Unexpected Copper-Catalyzed Aerobic Oxidative Cleavage of C(sp<sup>3</sup>)–C(sp<sup>3</sup>) Bond of Glycol Ethers
作者:Zhong-Quan Liu、Lixing Zhao、Xiaojie Shang、Zili Cui
DOI:10.1021/ol301220s
日期:2012.6.15
An unexpected Cu-catalyzed oxidative cleavage of the C(sp(3))-C(sp(3)) bond in glycol ethers by using air or molecular oxygen as the terminal stoichiometric oxidant is demonstrated. As a result, the corresponding alpha-acyloxy ethers and formates of 1,2-ethanediol are formed by direct coupling of carboxylic acids and aldehydes with glycol ethers under the reaction conditions. This method represents the first example of Cu-catalyzed aerobic cleavage of saturated C-C bond in ethers.