| 摘要 |
<p>Subs-tituted benzofuranyl esters of the formula where R1 denotes hydrogen, unsubstituted or chloro- or loweralkoxysubstituted loweralkyl, loweralkenyl or loweralkynyl, R2 denotes loweralkyl, loweralkenyl, loweralkynyl, a metal atom, loweralkylsulfonyl or acyl of the formula , R4 denoting unsubstituted or chloro-, loweralkoxy- or loweralkylthio-substituted loweralkyl, loweralkenyl or loweralkynyl, loweralkylamino, di-loweralkylamino, or unsubstituted or chlorosubstituted loweralkoxy, and R3 denotes hydrogen, unsubstituted or chloro- or loweralkoxy-substituted loweralkyl, loweralkenyl or loweralkynyl, or acyl of the formula , R5 denoting unsubstituted or chloro-, loweralkoxy- or loweralkylthio-substituted loweralkyl, loweralkenyl or loweralkynyl, loweralkylamino, di-loweralkylamino, or unsubstituted or chlorosubstituted loweralkoxy, have a strong herbicidal action and are particularly useful as weedkillers or for controlling the growth of unwanted plants.</p> |
