Conformational Analysis of Dibutylphosphorylacetic Acid N,N-Dibutylamide in Solution

Abstract

Abstract: Polarity of N,N-dibutylamide of dibutylphosphorylacetic acid has been determined and its conformational analysis has been carried out by the methods of dipole moments and quantum chemistry [DFT B3PW91/6-311++G(df,p)+CPCM]. In solution, this acetamide exists as conformational equilibrium of several forms with staggered gauche- and trans-orientations of the substituents relative to the P=O bond, in which intramolecular contacts are formed involving hydrogen atoms of butyl substituents at the nitrogen atom and the oxygen atom of the P=O group.