| 摘要 |
<p>The invention relates to novel dihydroimidazoisoindoledione compounds and the optical and stereo isomers thereof. This invention also relates to a method for the control of undesirable plant species with the dihydroimidazoisoindolediones and their optical and stereo isomers, and further, to a process for the preparation of the compounds. The novel compounds are those of the formula wherein X is H, CH3, NO2, C1, OCH3 or SCH3; R1 is alkyl C1-C4; R2 is alkyl C1-C6, cycloalkyl C3-C6, alkenyl C2-C4, phenyl, halophenyl or benzyl; and when R1 and R2 are taken together with the carbon to which they are attached they may form cycloalkyl C3-C6 optionally substituted with methyl; Y is hydrogen, -NR3R4, -OR5 or -SR6; and R3, R4, R5 and R6 are each hydrogen or alkyl C1-C4; and the optical and stereo isomers thereof.</p> |
