Conformational isomerism of α-ketoesters. A FTIR and ab initio study
Abstract
The conformational behaviour of several α-ketoesters was investigated using solution C–C
O torsional potential energy surface depending on the substituent at the α-keto group. In general the torsional potential is characterised by broad minima corresponding to s-cis and s-trans conformations and low interconversion barriers. The s-trans conformation is more stable but the fraction of s-cis is considerable at room temperature and increases with