NEW MATERIAL:The title compound of formula I (R is methyl or ethyl group).
EXAMPLE: The compound of formula I.
USE: A nematocide against soil nematodes of the genera Heterodera (cyst nematode), Pratylenchus (root leison nematode), and Meloidogyne (root-knot nematode), and Aphelenchoides besseyi Christie (rice white-tip nematode), applicable during the growth of crops, with safety and low toxicity to men and cattle, without phytotoxicity.
PROCESS: A phosphorodithioate of formula II (M is alkali metal; A is isopropyl, methyl, or ethyl group) is reacted with a halogen compound of the formula Hal.B (Hal is halogen; B is isopropyl, methyl, or ethyl group, and when A is isopropyl group B is methyl or ethyl group). Alternatively, a phosphorochloridothioate of formula IV is reacted with a mercaptan of the formula HSB in the presence of a deacidification agent.
FUJITA YOSHIO
MUKAI KUNIO
Next Patent: O-ETHYL S-METHYL S-PROPYLPHOSPHORODITHIOLATE AND NEMATOCIDE COMPRISING IT AS ACTIVE CONSTITUENT