Production of herbicidally-active compounds

Details Production of herbicidally-active compounds Production of herbicidally-active compounds

C - Chemistry, Metallurgy

07

C

260/514.1, 71/11

C07C 227/32 (2006.01) A01N 37/22 (2006.01) A01N 37/42 (2006.01) A01N 37/44 (2006.01) C07C 229/18 (2006.01) C07C 233/51 (2006.01) C07C 239/22 (2006.01) C07C 327/48 (2006.01)

Patent

CA 1110268

A B S T R A C T Stereospecific synthesis of Image (R-configuration at C2) by reaction of Image (S-configuration at C2) with Image at elevated temperature in the presence of a base, e.g., R-(-)-(2-(N-benzoyl-3-chloro-4-fluoroanilino)propionic acid isopropylester)from S-(-)-isopropyl lactate mesylate and 3-chloro-4-fluoroaniline followed by benzoylation. The compounds are very active herbicides against broad-leafed weeds (R = H) or wild oats (R = (thio)benzoyl).

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