| 摘要 |
The present invention is directed to novel compounds of the formula NO2 ¦ R1R3 ANGLE N-SO2-N=S ANGLE R2R3 ¦ NO2 which compounds are useful as herbicides. In the above and succeeding formulae herein, R1 represents hydrogen or R2, and each R2 independently represents loweralkyl of C1-C4, loweralkenyl of C3-C4, loweralkynyl of C3-C4, or radical of the formula -CH2-CH2-CH2-nY wherein n represents 0 or 1, and Y represents methoxy, cyano, bromo, or chloro, subject to the limitation that the groups represented by R1 and R2 together contain from 2 to 8, both inclusive, carbon atoms; and each R3 is taken separately and independently represents loweralkyl of C1-C3 or phenyl, subject to the limitation that both R3 groups together, do not contain more than 8 carbon atoms, or both R3 groups are taken together, and represent a divalent radical selected from the group consisting of -CH2-2-0 -CH2-2 and -CH2-q wherein q represents 4, 5, or 6.
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