Hydrolysis of α-chloro-substituted 2- and 4-pyridones: Rate enhancement by zwitterionic structure
作者:Ronald C. Tan、Janie Q.T. Vien、Weiming Wu
DOI:10.1016/j.bmcl.2011.11.076
日期:2012.1
The hydrolysis of α-chloro-N-methyl-4-pyridone was found to be more than five times faster than that of α-chloro-N-methyl-2-pyridone. Structural studies of 2- and 4-pyridones have revealed the higher polarity and greater extent of zwitterionic content in 4-pyridone. The results are thus consistent with the hypothesis that polarization and higher zwitterionic content in the heterocyclic structures enhances