Stereochemical studies. XI. Equilibria between δ-hydroxy-acids and δ-lactones in aqueous tetrahydrofuran. Relative stabilities of isomeric δ-lactones
作者:John T. Edward、Ellen Cooke、Themistocles C. Paradellis
DOI:10.1139/v82-367
日期:1982.10.15
equilibrium constants K′ for the hydrolysis of 13 δ-lactones to hydroxy-acids in 54% (mol/mol) aqueous tetrahydrofuran at 25 °C have been determined. The equilibrium constants for the isomerization of the five δ-lactones into their epimers, and for the isomerization of their hydroxy-acids into their epimers, have been calculated by the methods of conformational analysis. These calculated values are consistent