Influence of Some Thia- or Azasubstituted Butyric Acid Derivatives on the Chemical Shift of the Benzene Ring Carbon Atoms

Abstract

Eight thia- or azasubstituted butyric acid derivatives were prepared and the influence of these substituents on the chemical shifts of the benzene ring carbon atoms was studied.

Keywords

• 4-phenyl-3-thiabutyric acid derivatives
• 4-phenyl-3-azabutyric acid derivatives
• substituent chemical shifts