Studies on pyridine derivatives(Ⅹ Ⅳ):Synthesis and herbicidal activity of 2-(2-aryloxypyridine-3-carbonyloxy)-propionate

Twenty four 2-(2-aryloxy pyridine-3-carbonyloxy)propionates were synthesized by etherification,esterification starting from 2-chloroisonicotinic acid and phenoles.All of the structures were comfirmed by 1H NMR and MS spectra.Preliminary bioassay showed that the inhibition rate of some compounds were 100％ at 100 mg/L against Abutilon theophrasti and Digitaria adscendens.