摘要:
The present invention deals with 2-(substituted- imino)-3-alkyl-tetrahydro-6H-1,3,4-thiadiazin-5-ones, salts thereof, their preparation and their use for preparing corresponding 5-dialkoxy-phosphino-thioloxy compounds, which are valuable insecticides. The thiadiazinone compounds of the invention have the wherein R' is alkyl and R 2 is alkyl, cycloalkyl, alkenyl or aryl. They are prepared by reacting a thiosemicarbizide with an alkyl alpha-halothioacetate or with a haloacetic anhydride. These thiadiazin-5-ones are useful for preparing, by the addition of a dialkylhalothiophosphate, 2-(substituted- imino)-3-alkyl-5-dialkoxyphosphinothioloxy-6H-1,3,4-thiadiazines which are valuable insecticides.
摘要:
Composes de thiadiazine de formule (I) (FORMULE) ou R1 est un groupe alkyle, R2 est un groupe alkyle, cycloalkyle, alkenyle ou aryle, R3 est un groupe alkyle et R4 est un groupe alkyle, sont utiles comme produits insecticides. Les composes de thiadiazine sont prepares par addition d'un dialkylhalothiophosphate a une thiadiazine-1, 3, 4-6H-tetrahydro-5-one. Le precurseur de la thiodiazine-5-one est prepare par reaction d'un thiosemicarbizide avec un alkyle alpha-halothioacetate ou avec un anhydride haloacetique.