共查询到17条相似文献,搜索用时 125 毫秒
1.
近年来,无论国内外,对吡啶及其衍生物在农药和医药研究领域中的应用,特是别含氟、含氯杂环化合物的研究开发给予了高度重视。新型卤代吡啶化合物的合成及其在创制新医药、农药中应用,将成为今后化工科学研究和工业生产的热点。对于农药和医药企业而言,谁掌握和拥有各种卤代吡啶合成技术。谁就会在未来的新药开发和生产中抢得先机。 相似文献
2.
3.
4.
《精细与专用化学品》2009,(7)
时间:2009年7月主办单位:中国化工信息中心承办单位:《精细与专用化学品》杂志社吡啶及其衍生物作为一种高附加值的精细化工产品,具有广阔的应用和市场前景。目前,吡啶系列产品已成为很多精细化工、农药、医药等企业关注、开发的热点,如:吡啶产品的生产工艺、市场现状,烷基吡啶、卤代吡啶、氰基吡啶等 相似文献
5.
6.
7.
8.
卤代吡啶的合成和应用 总被引:1,自引:0,他引:1
卤代吡啶及其衍生物是具有农药活性的最有前途的化合物类别之一,现有大量的文章发表。由脂肪族化合物合成卤代吡啶吡啶环的合成已知有许多方法。例如,由1,5-二酮与氨反应可制取取代吡啶。按Ганча合成,由2摩尔β-二羰基化合物、醛和氨可容易地制得对称吡啶。β-二羰基化合物 相似文献
9.
10.
11.
12.
13.
吡啶系列原料国内市场分析 总被引:7,自引:0,他引:7
麦加保 《精细与专用化学品》2001,9(18):6-8
吡啶的生产方法有两种:一是从煤焦油中提取;二是从氨和甲醛、乙醛的合成过程中获得。我国一直采用前者生产,产量为200-300t/a,市场需求主要依靠进口,进口量最大的是比利时Reilly公司,1999年为2000多吨,占全国总消耗量的45%。2000年底,该公司与中国南通醋酸化工厂合作建立了1.1万t/a的吡啶系列产品生产厂,其中纯吡啶生产能力8000t/a、甲基吡啶3000t/a,填补了国内合成吡啶的空白。随着国内应用技术的发展,现已有多种用吡啶原料生产的产品打入国际市场。 相似文献
14.
15.
Petroleum ether insoluble fractions of a pyridine extract of a Japanese lignite were pyrolysed with tetralin. The chain length of alkyl groups bonded to aromatic rings and the average chemical structure of aromatic compounds in the lignite were obtained from analyses of hydrogenolysis products. Gas Chromatographic analyses of fractions eluted by cyclohexane showed the presence of C15 to C34 straight-chain alkanes. The chemical structures of the other fractions were analysed quantitatively by a combination of 13C and 1H n.m.r. The unit structure of petroleum ether insoluble fractions in the lignite consists of one to three aromatic rings with straight-chain alkyl groups, some of which are about 25–30 carbon atoms long. 相似文献
16.
Murat Arslan A. Yasemin Öztop Nurettin Şahiner 《Polymer-Plastics Technology and Engineering》2017,56(12):1295-1306
Acrylamide/4-vinyl pyridine hydrogels were synthesized by radiation polymerization technique using a γ-irradiator. The prepared radiation-synthesized acrylamide/4-vinyl pyridine hydrogels were then treated using a modifying agent with aromatic functional group. The modifying agent used in the modification of acrylamide/4-vinyl pyridine hydrogels was the N-aromatic alkyl quaternizing agent of chloromethyl benzene. The functional group on the modified acrylamide/4-vinyl pyridine hydrogels was confirmed with Fourier transform infrared (FTIR) spectrometry. Thermal analysis, surface morphology investigation, and swelling of the modified and unmodified hydrogels were completed. The antibacterial and antifungal activities of the modified and unmodified hydrogels were also tested against gram-positive Staphylococcus aureus (ATCC 25923); two gram-negative Escherichia coli (ATCC 25922), and Pseudomonas aeruginosa (ATCC 27853) human pathogenic bacteria and a fungal strain—Candida albicans (ATCC 10231) for their MBC values. It was found that acrylamide/4-vinyl pyridine hydrogels do not possess biocidal properties, whereas the modified form of acrylamide/4-vinyl pyridine?chloromethyl benzene showed highly bactericidal characteristics. 相似文献