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
Visible light-assisted organocatalytic α-acyloxylation of ketones using carboxylic acids and <i>N</i>-halosuccinimides
作者:Nagaraju Sakkani、Dhiraj K. Jha、Emily Whatley、John C.-G. Zhao
DOI:10.1039/d2cc04016f
日期:——
many important pharmaceuticals and biologically active naturalproducts and their derivatives. In this manuscript, the direct synthesis of α-acyloxylketones from ketones and readily available carboxylic acids was realized using a photo-assisted halogen bond-mediated organocatalytic α-acyloxylation reaction. The desired α-acyloxylation products were obtained in good to high yields.
METHODS FOR PRODUCING $g(a)-ACYLOXY CARBONYL COMPOUNDS FROM ENOL ESTER EPOXIDES
申请人:COLORADO STATE UNIVERSITY RESEARCH FOUNDATION
公开号:EP1169291A1
公开(公告)日:2002-01-09
US6384265B1
申请人:——
公开号:US6384265B1
公开(公告)日:2002-05-07
[EN] METHODS FOR PRODUCING alpha -ACYLOXY CARBONYL COMPOUNDS FROM ENOL ESTER EPOXIDES<br/>[FR] PROCEDES DE PRODUCTION DE COMPOSES DOLLAR G(a)-ACYLOXY CARBONYLE A PARTIR D'EPOXYDES D'ESTER ENOLIQUE
申请人:UNIV COLORADO STATE RES FOUND
公开号:WO2000056696A1
公开(公告)日:2000-09-28
The present invention provides a method for producing an α-acyloxy carbonyl compound from an enol ester epoxide stereoselectively using an acid catalyst which is capable of affecting rearrangement of the enol ester epoxide with inversion of stereochemistry. The present invention also provides a method for kinetic resolution of a stereoisomeric mixture of enol ester epoxides using a chiral catalyst. The kinetic resolution generally involves stereoselectively producing one particular enantiomer of α-acyloxy carbonyl compounds from the stereoisomeric mixture of enol ester epoxides.