Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1974-10-16
1977-12-13
Helfin, Bernard
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
71124, C07C 4322
Patent
active
040628965
ABSTRACT:
Nitrodiphenyl ether derivatives of the general formula: ##STR1## wherein X stands for Cl, F, CH.sub.3 or CF.sub.3, n is an integer of 1-3 with the proviso that X may be the same or different when n is 2 or 3 but X.sub.n should not be 2,4-dichloro substituent,
Are valuable as herbicides possessing an excellent herbicidal activity to a wide variety of undesirable weeds with an extremely low toxicity to useful crops. These nitrodiphenyl ether derivatives are prepared by hydroxyethylation of a compound of the above general formula except that a halogen atom is present in place of nitro group and subsequent halogenation of the .beta.-hydroxyethoxy group of the resulting compound.
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Harayama Takeo
Hojo Yoshikata
Igarashi Keiichi
Morikawa Osamu
Takasawa Yoshio
Helfin Bernard
Mitsui Toatsu Chemicals Incorporated
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