| 摘要 |
Novel carboxylic esters of formula (I), <IMAGE> wherein X is a chlorine, bromine or fluorine atom, are effective in the control of insects. They can be produced by reacting a carboxylic acid of formula (II), <IMAGE> or a reactive derivative thereof, with an alcohol or a reactive derivative of the formula (III), <IMAGE> wherein A is a hydroxyl group or a tosyloxy group. |
