The aim of this work was to synthesize selected furaldimines and their aminophosphonic derivatives and evaluation the phytotoxicity of new obtained products according to OECD 208 Guideline. Four Schiff bases, N-furfurylidene-p-anisidine (la), N-furfurylidene-p-toluidine (1b), N-furfurylidene-benzhydrylamine (1c), and N-(2-nitrofurfurylidene)-p-toluidine (Id) were synthesized and three new furan-derived N-substituted aminomethylphosphonic acids, namely: 2-furyl N-(p-methoxyphenyl)-aminomethylphosphonic acid (2a), 2-furyl N-(p-methylphenyl)-aminomethylphosphonic acid (2b) and 2-furyl N-(diphenylmethyl)-aminomethylphosphonic acid (2c) were synthesized by the addition of in situ generated bis-(trimethylsilyl) phosphite to azomethine bond of corresponding Schiff bases 1a-c. Three Schiff bases 1a-b and 1d as well as all three aminophosphonic acids 2a-c were analyzed in regard with their phytotoxicity toward two plants, radish (Raphanus sativus) and oat (Avena sativa).It has been found that tested N-furfurylidene-p-anisidine (la), N-(2-nitrofurfurylidene)-p-toluidine (Id) and aminophosphonic acids 2a c are toxic for selected plants. N-furfurylidene-p-toluidine (1b) did not show any ecotoxicological impact in used plant growth test.
Antibacterial action of (5-nitrofurfuryl)-derived aminophosphonates and their parent imines
AbstractTen aminophosphonates bearing 2-nitrofuran moiety and two N-aryl 5-nitro-furfuralaldimines, namely, N-(2-nitrofurfurylidene)-p-toluidine and N-(2-nitrofurfurylidene)-p-anisidine, were tested in aspect of their antibacterial action. O,O′-diphenyl derivatives were found inactive, while O,O′-dimethyl and O,O′-diethyl derivatives were revealed to act moderately efficiently against clinical isolates
Since aminophosphonate-based herbicides like glyphosate are currently one of the most popular and widely applied active agent in agrochemistry, there is an urgent need for searching new compounds among this family with potential herbicidalactivity, but exhibiting low toxicity against surrounding environment. Six new (5-nitrofurfuryl)-derived aminophosphonates were synthesized for the first time and