| abstract |
(57) [Summary] [Object] The present invention relates to a novel method for producing a sulfonylurea herbicide of the following general formula (I), an intermediate used therefor, and a method for producing the intermediate. It is a thing. [Structure] a) The sulfonyl chloride derivative is treated with 2-amino-4,6 in the presence of a metal cyanate and an organic base catalyst. -Reacted with dimethoxypyrimidine or b) 1 A method for producing a sulfonylurea derivative represented by the following general formula (I), which comprises reacting a-[((pyrazolsulfonyl) amino) carbonyl] pyridinium hydroxide compound with 2-amino-4,6-dimethoxypyrimidine. [Chemical 1] |