摘要 |
<p>It has been found that compounds of the structure <IMAGE> wherein X is O, S or SO2, R represents H or one or more halogen, loweralkyl, -CH=CH-CH=CH-, CN, NO2, loweralkyloxy, loweralkylcarbonyl or loweralkylmercapto, R' is H, loweralkyl, benzyl or R'', and R'' is CH2C 3BOND CH, CMe2C 3BOND CH or CHMeC 3BOND CH are excellent insect ovicides.</p> |