Starting from guanidine nitrate, diethyl malonate and glucide, the benzene sulfonyl urea herbicide primisulfurion-methyl is synthesized through five steps of reaction.

• 以硝酸胍、丙二酸二乙酯和糖精为起始原料,经5步反应合成了苯磺酰脲类除草剂氟嘧磺隆。