| 摘要 |
NEW MATERIAL:A compound expressed by formula I (R<1> is H, alkyl or alkoxymethyl; R<2> is alkyl, alkenyl, alkynyl, benzyl, etc.; R<3> is H or methyl except when R<1> is methyl, R<2> is ethyl and R<3> is H) or salt thereof. EXAMPLE:2-(1-Allyloxyaminopropylidene)-5-[2-(4-trifluorometylphe-nylth io)ethyl] cyclohexane-1,3-dione. USE:A herbicide. PREPARATION:A acylcyclohexane derivative expressed by formula II is reacted with a hydroxylamine expressed by the formula NH2OR<2> and inorganic salt thereof to provide the compound expressed by formula I. The compound expressed by formula I shows excellent herbicidal activity in low herbicide amount and no phylotoxicity to crops. |
