本文通过检索文献，对苯脲类、酰基脲类、酰基硫脲类及四唑类化合物的生物活性作了系统的论述。
By retrieving concerned Literatures, this article discussed comprehensively the biological activities of phenyl ureas, acyl ureas and tetrazoles.
本文以乙磺酰基乙腈和1，1，3，3-四甲氧基丙烷为起始原料，经五步反应合成得到磺酰脲类除草剂玉嘧磺隆。
Sulfonylurea herbicide Rimsulfuron was synthesized by a five-step reaction starting with 2-(ethylsulfonyl)acetonitrile and 1,1,3,3-tetramethoxypropane.
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