Preparation, Physical Properties, and Configuration of the Isomers in PHOSDRIN® Insecticide

Phosphates d'énols-X. Détermination des isomères géométriques diversement substitués par résonance magnétique nucléaire

“…de phosphates d'Cnols substituCs sur le carbone 1 a fait I'objet de quelques travaux (1)(2)(3)(4). L'absence d'une constante de couplage 3JHH cis ou trans sur la double liaison de l'enchainement Cnolique rendait difficile l'identification des isom2res E et Z rCsultant de la reaction de Perkow (30) (schCma 1).…”

Fate of tetrachlorvinphos and its isomer in soluble fraction (105000g) from goose and turkey liver homogenates

“…The spectroscopic data on these compounds have not appeared in the literature. In this connection it is noteworthy that the first structure assignment of the solid as the 0 isomer was reported to have been made on the basis of its NMR and IR spectra (Whetstone et al, 1966), following methods used for the insecticide Phosdrin (Stiles et al, 1961). In the present study the NMR spectra of IA and Animal Research Institute, Research Branch, Agriculture Canada, Ottawa, Ontario, Canada K1A 0C6.…”

Preparation and biological activity of the isomers of dimethyl-1,3-dicarbomethoxy-1-propen-2-yl phosphate (Bomyl)

“…was collected. An analytical sample was ob- The assignment of the configuration of the geometrical isomers could be made on the basis of their infrared and NMR spectra (Stothers and Spencer, 1961;Fukuto et al, 1961;Stiles et al, 1961;Thompson, 1965). The infrared spectrum of the cis isomer has characteristic absorption bands at 1655, 1370, 1325, 980, 945, and 895 cm.-1, while the trans isomer has bands at 1760, 1345, and 950 cm.-1 Both isomers have a common absorption band at 915 cm.-1 NMR spectroscopy provided the best means for the assignment of the configuration of the two isomers as well as for the determination of the relative amounts of each isomer.…”