| 摘要 |
Nitrodiphenyl ether compd. (I; x = Cl atom or trifluoromethyl group, R = methyl, ethyl group, n = 2,3), useful as herbicides suitable for control of Sagittaria in rice paddies, was prepd. 1 mole of diphenyl ether (II; X, R, n are given) and 1-1.2 mole of lower aliphati c anhydride, such as acetic anhydride or propionic anhydride, were nitrogenated at 0-40≦̸C for 2-3hr to give I.
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