The First Cyclopropanation Reaction of Unmasked α<i>,</i>β-Unsaturated Carboxylic Acids: Direct and Complete Stereospecific Synthesis of Cyclopropanecarboxylic Acids Promoted by Sm/CHI<sub>3</sub>
作者:José M. Concellón、Humberto Rodríguez-Solla、Carmen Simal
DOI:10.1021/ol0709174
日期:2007.7.1
A samarium-promoted cyclopropanation of unmasked alpha,beta-unsaturated acids is described. This reaction can be carried out on (E)- or (Z)-alpha,beta-unsaturated carboxylic acids. In all cases the process is completely stereospecific and stereoselective. A mechanism has been proposed to explain the cyclopropanation reaction.