| abstract |
NEW MATERIAL: A compd. represented by formula I (wherein R 1 is H, OH, NY 2 , alkyl, cycloalkyl, aralkyl aryl, alkoxy or mono- or d-alkylamino; R 2 is R 1 , mercapto or alkylthio; R 1 and R 2 are combined to form alkanediyl and R 3 is alkyl, aralkyl, aryl or heteroaryl) and salts thereof. n EXAMPLE: 5-Ethyl-4-methyl-2-(2-methoxyacarbonyl-phenylsulfonyl- aminocarbonyl)-2,4-dihydro-3H-1,2,4-triazol-3-one. n USE: A defoliant, a desiccant, a destruction agent of a broadleaf tree and, especially, a herbicide. n PROCESS: Triazolinone represented by formula II and sulfonylisocyanate represented by formula III are reacted in the presence of a proper diluent to obtain the compd. represented by formula I. n COPYRIGHT: (C)1990,JPO |