The Effect of New Thiophene-Derived Aminophosphonic Derivatives on Growth of Terrestrial Plants: A Seedling Emergence and Growth Test

摘要

The aim of this work was to synthesize selected thiophene-derived aminophosphonic systems and evaluate the phytotoxicity of newly obtained products according to the OECD 208 Guideline. Seven new thiophene-derived N -substituted dimethyl aminomethylphosphonic acid esters 2a – h were synthesized by the addition of an appropriate phosphite to azomethine bond of starting Schiff bases 1a – h , and NMR spectroscopic properties of aminophosphonates were investigated. These eight compounds were analyzed in regard to their phytotoxicity towards two plants, radish ( Raphanus sativus ) and oat ( Avena sativa ). On the basis of the obtained results, it was found that tested aminophosphonates 2a – h showed an ecotoxicological impact against selected plants, albeit to various degrees.