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A facile method for the synthesis of a new series of R,R-2-(4-(2-(4-(5-chloro-3-halopyridin-2-yloxy)-phenoxy)-propionyloxy)-phenoxy) -propionic acid ester derivatives containing a halo-substituted pyridine carrying two R,R chiral centers from(R)-2-(4- hydroxyphenoxy)propionic acid,halopyridines and alcohols using base/cyanuric chloride/catalyst system is reported.Their herbicidal activities against grass weeds and crops selectivity were evaluated.
A facile method for the synthesis of a new series of R, R-2- (4- (2- (4- (5-chloro-3- halopyridin-2- yloxy) -phenoxy) -propionyloxy) -phenoxy) R chiral centers from (R) -2- (4-hydroxyphenoxy) propionic acid, halopyridines and alcohols using base / cyanuric chloride / catalyst system is reported .ir herbicidal activities against R weeds and crops selectivity were evaluated.