共查询到20条相似文献,搜索用时 31 毫秒
1.
2.
3.
Phototransformation of metoxuron [3‐(3‐chloro‐4‐methoxyphenyl)‐1,1‐dimethylurea] in aqueous solution
Abdelaziz Boulkamh Dominique Harakat Tahar Sehili Pierre Boule 《Pest management science》2001,57(12):1119-1126
UV irradiation of metoxuron in aerated aqueous solution at 254 nm or between 300 and 450 nm led initially to an almost specific photohydrolysis of the C–Cl bond, resulting in the formation of 3‐(3‐hydroxy‐4‐methoxyphenyl)‐1,1‐dimethylurea (MX3) and hydrogen chloride. The quantum yield was determined to be 0.020 (±0.005) in solutions irradiated at 254 nm. Five minor photoproducts were also identified, in particular the dihydroxydimethoxybiphenyl derivatives resulting from the phototransformation of MX3. Irradiation increased the toxicity of an aqueous solution of metoxuron to the marine bacterium Vibrio fischeri. © 2001 Society of Chemical Industry 相似文献
4.
5.
Bao‐Lei Wang Hong‐Wei Zhu Zheng‐Ming Li Xiao Zhang Shu‐Jing Yu Yi Ma Hai‐Bin Song 《Pest management science》2019,75(12):3273-3281
6.
7.
8.
Cyclization of 3‐aryl‐1‐(2‐hydroxyphenyl)prop‐2‐en‐1‐ones with hydrazine hydrate in refluxing formic acid afforded the title ligands, 5‐aryl‐1‐formyl‐4,5‐dihydro‐3‐(2‐hydroxyphenyl)‐1H‐pyrazoles (HL1–HL4, Ar = Ph, 4‐CH3O‐C6H4‐, 2‐furyl, 2‐thienyl). Reaction of HL1–HL4 with the divalent metal ions, Mn2+, Co2+, Ni2+, Cu2+, and Zn2+, afforded novel complexes of the type [ML2] (M = metal ion; L = deprotonated ligand) which were characterized by elemental analyses, molecular weight determinations, molar conductances, magnetic moments and electronic and infrared spectral data. The ligands behaved as tridentate, coordinating through the phenolic oxygen after deprotonation, N‐2 of the pyrazole ring and oxygen of the 1‐formyl group. The ligands and their complexes were evaluated for growth‐inhibiting activity against four phytopathogenic fungi. Macrophomina phaseoli was generally most sensitive followed by Alternaria alternata and Colletotrichum falcatum while Fusarium oxysporum was least sensitive to the tested compounds. The ligand HL1 and its complexes showed the best activity against the fungi tested. © 2000 Society of Chemical Industry 相似文献
9.
10.
11.
12.
Design,synthesis, antiviral activity and three‐dimensional quantitative structure–activity relationship study of novel 1,4‐pentadien‐3‐one derivatives containing the 1,3,4‐oxadiazole moiety
下载免费PDF全文
![点击此处可从《Pest management science》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Xiuhai Gan Deyu Hu Pei Li Jian Wu Xuewen Chen Wei Xue Baoan Song 《Pest management science》2016,72(3):534-543
13.
14.
15.
16.
17.
18.
19.