Insecticide Screening, Synthesis and Insecticidal Activity of O-Methyl O-(2,4,5-Trichlorophenyl) Phosphoramidothioates and Related Compounds

Insecticide Screening, Synthesis and Insecticide Activity of Methyl 2,4,5-Trichlorophenyl Phosphoramidates

“…The rate of amide formation was considerably more rapid than that previously noted with the thio analogs (2), indicating the high electrophilic character of the phosphoryl group.…”

Plant Growth Regulator Activity of Optical Isomers of DMPA

“…It has been suggested that the increased yield of crops under field conditions from the application of dl-DMPA (6, 7) might result from the known fungicidal (4) or insecticidal (2) properties of the compound. The results of experiments reported here suggest that these yield increases might be attributed to stimulation of the growth of the plants.…”

Synthesis and Insecticidal Activity of Some O,O-Dialkyl 0-3,5,6-Trihalo-2-pyridyl Phosphates and Phosphorothioates

“…Results shown in Table II indicate that the , -dialkyl trihalo-2-pyridyl phosphates and phosphorothioates are wide-spectrum insecticides of a high order of toxicity. Topical insecticide test methods as previously described (2) are nonaqueous, acetone applications of single droplets to each individual insect, thus minimizing possible hydrolysis effects on the less stable compounds. These results (Table III) again illustrate the potential usefulness of this new group of pyridyl phosphorus-containing insecticides.…”