Plant Growth Regulating Activity of Some N-Substituted Chloroacetylanilines

Area of Science:

• Agrochemicals
• Organic Chemistry
• Plant Physiology

Background:

• Plant growth regulators are crucial for agriculture.
• N-substituted chloroacetylanilines represent a class of compounds with potential biological activity.
• Understanding structure-activity relationships is key to developing new agrochemicals.

Purpose of the Study:

• To synthesize and characterize six novel N-substituted chloroacetylanilines.
• To evaluate the plant growth regulating activity of these synthesized compounds.
• To investigate their effects on wheat (Triticum aestivum) germination and root elongation.

Main Methods:

• Synthesis via condensation of N-substituted anilines with chloroacetylchloride in an acidic medium.
• Physico-chemical characterization using elemental analysis and spectral methods (UV-Vis, FTIR, 1H-NMR, 13C-NMR, GC-MS).
• Plant growth regulation assay on wheat caryopses at five different concentrations (0.1% to 5%).

Main Results:

• The synthesized N-substituted chloroacetylanilines were obtained as solids with high melting points and yields.
• Structural confirmation was achieved through comprehensive elemental and spectral analyses.
• The compounds exhibited varying effects on wheat germination and radicular elongation.

Conclusions:

• The six synthesized N-substituted chloroacetylanilines were successfully characterized.
• All tested concentrations of the compounds inhibited the mean radicular elongation of wheat compared to a reference.
• These findings suggest potential applications of these compounds as plant growth inhibitors.