PESTICIDAL COMPOSITIONS CONTAINING DITHIOCARBAMATES,CERTAIN NEW DITHIOCARBAMATES AND THEIR PREPARATION

摘要

Dithiocarbamates of formula R1R2NCSSR3 (I) (where R1 and R2 each are 2-4C alkyl or 3-4C alkenyl or R1 and R2 together with N form a 5- or 7-membered heterocyclic ring with 1 heteroatom, opt. substd. by 1 or 2 Me or Et gps., and R3 is 3-4C alkenyl opt. substd. by 1 or 2 halogen atoms), pref. R1R2NCSSCH2C(CH3)=CH2, are active ingredients in herbicidal compsns., against echinochloa, eleocharis, scirpus, fimbistylis and alisma in transplanted rice cultures. R1R2NCSSCH2C(CH3)=CH2 are pref. prepd. by reacting amines R1R2NH with CS2 and further reaction of obtained salt of R1R2NHCSSH with HalCH2C(CH3)=CH2.