The treatment of various 1,3-dihalides including the ones bearing an ester group with the titanocene(II) species produced cyclopropanes in good yields. The reaction of dihalides possessing two secondary halogens proceeded stereoselectively to afford trans-isomers as major products.
Base-Catalyzed Ethanolysis of α-Diethoxyphosphoryl-γ-lactones: A Facile Synthesis of Cyclopropanecarboxylates
作者:Henryk Krawczyk、Katarzyna Wąsek、Jacek Kędzia
DOI:10.1055/s-2005-917116
日期:——
A range of alkyl- and alkenylcyclopropanecarboxylic acid ethyl esters has been stereoselectively prepared by treatment of substituted α-diethoxyphosphoryl-y-lactones with sodium ethoxide in tetrahydrofuran.