C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/297
C07D 213/61 (2006.01)
Patent
CA 1182459
ABSTRACT OF THE DISCLOSURE Certain novel pyridinyloxyphenoxy alkanoic acids, pyridinylthiophenoxy alkanoic acids, derivatives thereof and related compounds exhibit surprising preemergent and postemergent activity in the control of grassy weeds. They are prepared from novel pyridine intermediates having the general formula:- Image wherein W' is F, Br or Image , and X is CF3, Cl or Br and its alkali metal salts.
457507
Johnston Howard
Troxell Lillian H.
Smart & Biggar
The Dow Chemical Company
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