Pyridine intermediates for the preparation of...

C - Chemistry – Metallurgy – 07 – D

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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

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