Examination of pinanediol–boronic acid ester formation in aqueous media: relevance to the relative stability of trigonal and tetrahedral boronate esters
作者:Mayte A. Martínez-Aguirre、Marcos Flores-Alamo、Felipe Medrano、Anatoly K. Yatsimirsky
DOI:10.1039/d0ob00201a
日期:——
study of the stability of the six-membered cyclic boronate esters of chromotropic acid demonstrated the order Ktrig ≪ Ktet although the strain was absent in these esters. The results for m-, p-substituted phenylboronic acids show that the stability of both five- and six-membered trigonal esters formed with pinanediol and chromotropic acid, respectively, is insensitive to electronic effects but the