Size‐Induced Inversion of Selectivity in the Acylation of 1,2‐Diols
作者:Stefanie Mayr、Hendrik Zipse
DOI:10.1002/chem.202101905
日期:2021.12.23
Lewis-base catalyzed acylation of aromatic 1,2-ethylenediols with anhydrides depends strongly on the size of the reagents and the π-system of the diol. Steric effects have a larger impact on reactions of primary hydroxyl groups in the 1,2-diol as well as the monoester than those of secondary hydroxyl groups. For sterically demanding anhydrides this flips the selectivity towards secondaryalcohols.