共查询到20条相似文献,搜索用时 187 毫秒
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原乙酸三甲酯主要用于相模法中合成氯氰菊酯、功夫菊酯等拟除虫菊醋,由于其特殊的化学结构和活泼性,在有机合成中往往能简化工艺, 相似文献
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本文介绍了采用一种新型填料就可以实现用单一填充柱将功夫菊酯中两种异构体完全分离开,获得高分离效能和高定量性效果。 相似文献
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氟氯苯菊酯的性质、用处,介绍中间体氟氯苯菊酸的合成的四种工艺路线及其优缺点;另一个中间体4-氟-3-苯氧基苯甲醛的合成的三种工艺路线;以及这两种中间体合成氟氯苯菊酯的工艺路线;着重介绍了对氯苯乙酮为原料合成氟氯苯菊酸的工艺条件。 相似文献
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70年代初,Elliott 及其合作者合成了第一批对光稳定的拟除虫菊酯。这些化合物,特别是氯菊酯、氯氰菊酯和溴氰菊酯已被几个公司生产。它们的产品已在世界各地登记并大量销售。Elliott 的成就为后来的拟除虫菊酯类化合物的合成和商品化铺平了道路。例如住友化学工业公司推出的氰戊菊酯,ICI 公司出品的 cyhalothrin(功夫菊酯)(图1)。这些拟除虫菊酯都具有广谱活性,主要用作叶面触杀剂,特别是用于防治棉花上的鳞翅目害虫。 相似文献
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一、引言近年来合成拟除虫菊酯的发展很快。尤其自70年代以来,先后合成了耐光性的农用拟除虫菊酯氯菊酯、氯氰菊酯、澳氰菊酯、氰戊菊酯和氟氰菊酯等。这些拟除虫菊酯的杀虫活性较天然除虫菊素高几十倍。其中特别是澳氰菊酯的工业产品含98%的有效成分是单一的右旋顺式异构体“Decis”药效特高,比其它现有拟除虫菊酯要高4至10倍。氟氰菊酯药效与氯氰 相似文献
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本文使用5%SE-30/Chromosorb G AW DMCS填充的1米长玻璃柱,探讨了甲醚菊酯、胺菊酯、甲氰菊酯、功夫菊酯、氯菊酯、百树菊酯、氯氰菊酯、氰戊菊酯、溴氰菊酯等九种拟除虫菊酯类农药的同柱气相色谱测定法,起到了一柱多用的良好效果。 相似文献
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[目的]评价新化合物HNPC-A8008[5-(3-氯烯丙基)氨基-1-(2,6-二氯-4-三氟甲基)苯基-4-三氟甲基亚磺酰基吡唑-3-腈)]对几种鳞翅目害虫的室内杀虫活性和田间防治效果。[方法]分别采用浸渍法和常规喷雾法进行室内毒力测定和田间药效试验。[结果]HNPC-A8008对鳞翅目害虫黏虫、菜青虫、小菜蛾、斜纹夜蛾48 h的LC50值分别为0.73、0.94、1.14、25.70 mg/L;在剂量为15、30、45 g a.i./hm2时,药后1、3、7 d对小菜蛾和菜青虫的田间防效分别超过了81.41%、89.80%;在剂量为30、60、90 g a.i./hm2时,药后14 d,对稻纵卷叶螟和二化螟的田间防效分别超过了66.99%、72.32%。[结论]新化合物HNPC-A8008在室内对多种鳞翅目害虫表现出很高的毒杀活性;对小菜蛾、菜青虫、稻纵卷叶螟、二化螟有良好的田间防治效果,且对作物和天敌安全。 相似文献
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L. MartínA. González-Coloma C.E. DíazA.M. Mainar J.S. Urieta 《The Journal of Supercritical Fluids》2011,57(2):120-128
The objective of the work was to optimize the extraction of Persea indica L. bioactive compounds by means of supercritical fluid extraction (SFE) and analyze their insecticidal effects. P. indica L. is one of the dominant species of the Canarian laurel forest, a relict of the Tertiary flora. Different extraction conditions (pressure, plant material particle size, temperature, CO2 flow) and the influence of entrainer were tested and the evolution of the extracted compounds was screened by HPLC-MS. A comparison with conventional techniques such as hydrodistillation (HD) or organic solvent extraction (OSE) was also presented. Particularly, four CO2 densities ranging from 628.61 kg/m3 to 839.81 kg/m3 were studied in the range of 10.0-20.0 MPa and 40-50 °C. The extracts contained insecticidal ryanodanes of great interest, previously described as insecticidal components of P. indica. The insecticidal antifeedant activity of selected extracts was inspected. A model based on mass transfer equations, the Sovová model, was successfully applied to correlate the experimental data. 相似文献
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[方法]为获得新型鱼尼汀受体类杀虫剂,以3-碘苯酐及2-甲基-1-甲硒基-2-丙胺为起始原料,经缩合反应、关环及开环反应制备了系列含硒的邻苯二甲酰胺类新化合物(5a-5i,收率46%-50%),以核磁共振氢谱及元素分析等手段对中间体、终产物结构进行了表征。[结果]杀虫活性筛选表明化合物5a、5d、5h、5i在100 mg/L质量浓度下对小菜蛾杀死率达到90%以上。[结论]通过构效关系的分析得知:以先导物氟虫酰胺为对照,改变脂肪胺部分为含硒片段,活性总体下降;芳香胺的氨基对位为二氯烯丙氧基时,氨基邻位的卤原子对杀虫活性具有促进作用。 相似文献
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F William Jones 《Coloration Technology》1983,99(2):46-51
The insecticidal properties of two fibre-reactive organophosphorus esters, O-ethyl-S-n-propyl-O-(4- (2-(3- vinylsulphonylpropionyl) oxyethyl)-thiophenyl) phosphorothionothiolate and O-ethyl-S-n-propyl-O-(4-(2-(3-vinylsulphonylpropionyl) oxyethyl)-thiophenyl)phosphorothiolate, have been determined against a number of keratin-digesting insects. Both compounds were effective against the more common textile pests at relatively low application levels; however, considerably higher levels were required to control the feeding damage due to Hoffmannophila pseudospretella. Generally, the insecticidal activity of the phosphorothiolate was greater than the activity of the phosphorothionothiolate; however, this was offset by the greater susceptibility of the phosphorothiolate to hydrolysis during application from a dyebath. The application of these compounds during dyeing and other textile processes was examined. 相似文献
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