| abstract |
NEW MATERIAL:A Δ 2 -1,2,4-triazolin-5-one expressed by formulaI(X is halogen; R 1 is alkyl; Y is H, alkyloxy, alkenyloxy, alkynyloxy, halomethyloxy, haloethyloxy, alkyloxycarbonyloxyalkyloxy or phenylalkyloxy; R 2 is H, alkyl, halomehyl or haloethyl). n EXAMPLE: 1-( 2-Fluoro-4-chlorophenyl )-3-methyl-4-difluoromethyl-Δ 2 -1, 2, 4-trizolin- 5-one. n USE: A herbicide. n PROCESS: A compound expressed by formula II is reacted with a compound expressed by the formula R 2 Z (Z is Cl, Br orIor R 2 Z is haloethylene) to give one of the compounds expressed by formulaI. n COPYRIGHT: (C)1982,JPO&Japio |