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以苯并咪唑-2-甲酸、水合肼、取代苯基异硫氰酸酯和取代苯甲酸等为原料,经多步反应合成了16种2-(苯并咪唑-2-基)-5-取代苯基-1,3,4-噁二唑和2-(苯并咪唑-2-基)-5-取代苯胺基-1,3,4-噁二唑新化合物,并考察了微波辐射对反应的影响.产物结构利用IR,1H NMR,13C NMR和元素分析确证.用生长速率法测试了目标化合物对番茄灰霉病菌和小麦菌核病菌的离体抑制活性,结果表明3种化合物对番茄灰霉病菌有很高的抑制活性,其EC50分别为2.55,6.34和5.12μg/mL,活性高于对照药剂多菌灵(EC50=7.40μg/mL).
Sixteen kinds of 2- (benzimidazol-2-yl) -5- (benzyloxy) imidazolecarboxylic acid were synthesized by multiple reactions using benzimidazole-2-carboxylic acid, hydrazine hydrate, substituted phenyl isothiocyanate and substituted benzoic acid as starting materials. Substituted phenyl-1,3,4-oxadiazole and 2- (benzimidazol-2-yl) -5-substituted anilino-1,3,4-oxadiazole compounds were investigated. The effects of microwave irradiation on The structure of the product was confirmed by IR, 1H NMR, 13C NMR and elemental analysis. The inhibitory activity of the target compound against Botrytis cinerea and Sclerotinia sclerotiorum was tested by the growth rate method. The results showed that the three compounds inhibited the growth of tomato Botrytis cinerea had high inhibitory activity with EC50 of 2.55, 6.34 and 5.12 μg / mL respectively, which was higher than that of the control agent carbendazim (EC50 = 7.40 μg / mL).