Flazasulfuron: alcoholysis, chemical hydrolysis, and degradation on various minerals

C Bertrand, A Witczak-Legrand, J Sabadie…

Index: Bertrand, Cedric; Witczak-Legrand, Anne; Sabadie, Jean; Cooper, Jean-Francois Journal of Agricultural and Food Chemistry, 2003 , vol. 51, # 26 p. 7717 - 7721

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Citation Number: 11

Abstract

The herbicide flazasulfuron undergoes rapid alcoholysis. High yields of the corresponding carbamate and aminopyrimidine are obtained after the alcoholysis process (methanol or ethanol) at 30° C, in the course of which the concomitant rearrangement reaction remains minor. Hydrolysis (pH ranging from 5 to 11) of flazasulfuron at 30° C principally involves the rearrangement into urea after elimination of SO2 and can lead, in a small proportion, to ...