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德国巴斯夫公司改变早期的咪唑啉酮除草剂及其开链前体结构,制得杂环二羧酸单酰胺(图1)。从中发现其合成的诸多不同的杂环系化合物中,数异(口恶)唑酰胺衍生物的活性最高。新颖的异(口恶)唑衍生物属光合作用抑制剂。据测定,此类除草剂对抑制藜嫩株的二氧化碳同化率和抑制小麦类囊体分离的希尔反应有显著作用。芽后应用,对广范围的双子叶杂草有很强的除草活性,而对玉米作物的耐药性极佳。构效关系研究表明,其除草活性很大程度取决于酰胺基团键合于异(口恶)唑环的位置。
BASF changed its early imidazolinone herbicide and its open-chain precursor structure to produce heterocyclic dicarboxylic acid monoamide (Figure 1). Among the many different heterocyclic compounds from which it was found, the most diverse derivatives of oxazole were the most active derivatives. The novel iso (oxazole) derivatives are photosynthesis inhibitors. It has been determined that such herbicides have a significant effect on inhibiting the carbon dioxide assimilation rate of Quillal quinqueitium strains and Hill reaction inhibiting wheat thylakoid separation. Post-emergence application has strong herbicidal activity against a wide range of dicotyledonous weeds while excellent resistance to corn crops. Structure-activity relationship studies have shown that its herbicidal activity depends largely on the amide group bonded to different (oxazole) oxazole ring position.