NEW MATERIAL:A compound shown by the formula I [A and B are halogen, lower alkyl, or halogen-substituted lower alkyl; m+n=0W3; R is group shown by the formula II (R1 is H, alkyl, lower alkenyl, etc.; R2 and R3 are H, alkyl, cycloalkyl, etc.), group shown by the formula III (R4 and R5 are H, halogen, alkyl, etc.), etc.].
EXAMPLE: 3-Acetohydrazino-4'-nitrodiphenyl ether.
USE: A herbicide, showing improved activity as a herbicide for paddy fields and plowed fields, having wide herbicidal spectrum, applicable wide ranges of crops and showing high selectivity.
PREPARATION: A compound shown by the formula IV is reacted with an acid chloride shown by the formula RfCOCl or an acid anhydride shown by the formula (RfCO)2O(Rf is as shown for R3), to give a compound shown by the formula I.
HOSONO AKIRA
MIKI NOBORU
ODA KENGO
URA MASAAKI
SATO NAOKI
TOYAMA TERUHIKO
TACHIBANA HAJIME
ENOMOTO YUJI
FUNAKOSHI YASUNOBU
FUJITA TAKASHI
HOJO SACHIYOSHI