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以2-氯烟酸为起始原料,以硫脲引入巯基,再经多步反应,合成了除草剂烟嘧磺隆中间体2-氨基磺酰基-N,N-二甲基烟酰胺,总收率58.1%.此合成路线国内未见报道. 相似文献
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马来酰亚胺类杀菌剂的制备与性能评价 总被引:2,自引:0,他引:2
报道了2种马来酰亚胺类化合物Ⅳ-苯基马来酰亚胺和Ⅳ-苄基马来酰亚胺的制备过程及其对石化污水中的三种主要菌类即异养菌、铁细菌和硫酸盐还原菌的静态杀菌性能,并将其与目前常用的异噻唑啉酮和“1227”(十二烷基二甲基苄基氯化铵)进行了比较。结果表明,Ⅳ-苄基马来酰亚胺是一种高效杀菌剂。其性能优于异噻唑啉酮,与“1227”相比,其1h的杀菌效果稍弱,但其持久杀菌效果远好于“1227”。N-苯基马来酰亚胺对异养菌和铁细菌有一定的杀菌效果。但对硫酸盐还原菌无效。 相似文献
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N6-苯甲酰基-2',3'-O-异亚丙基-5'-(N-甲基-N-甲氧基酰胺)腺苷,Weinreb酰胺腺苷衍生物是用于制备Weinreb酮腺苷衍生物的重要中间体。报道了N6-苯甲酰基-2',3'-O-异亚丙基-5'-(N-甲基-N-甲氧基酰胺)腺苷的合成方法,以2',3'-O-异亚丙基腺苷为原料,经苯甲酰化、氧化反应和酰胺化反应,总收率为45%,其结构经1H NMR,13C NMR和HRMS表征。 相似文献
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王黎 《化学工业与工程技术》1997,18(4):7-9
对不锈钢缓蚀剂2-炔丙基巯基苯并咪唑的合成工艺进行了研究。先由邻苯二胺和二硫化碳合成2-巯基苯并咪唑,炔丙醇和三氯化磷合成3-氯丙炔;再由2-巯基苯并咪唑和3-氯丙炔在丙酮溶剂中合成2-炔丙基巯基苯并咪唑。对是否使用相转移催化剂进行了探讨,认为无相转移催化剂可使操作简便,适合于工业化生产。 相似文献
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Yong-Jun Liu Xue-Liang Pei Shou-Ri Sheng Fang Yang Xiao-Ling Liu Cai-Sheng Song 《应用聚合物科学杂志》2012,125(5):3904-3912
A new diamine monomer, 1,4-bis(4-aminophenoxycarbonyl)-2-(4-trifluoromethylphenoxy)benzene containing the trifluoromethyl and ester groups, was prepared from 2-(4-trifluoromethylphenoxy)terephthalyol chloride and 4-nitrophenol in two steps. Then, a series of novel aromatic poly(ester amide)s containing pendant trifluoromethylphenoxy groups with inherent viscosities of 0.51–1.14 dL/g have been prepared by low-temperature solution polycondensation from this diamine with various aromatic diacid chlorides. All the poly(ester amide)s are amorphous and readily soluble in many organic solvents such as N,N-dimethylacetamide (DMAC) and dimethyl sulfoxide. Tough and flexible polymer films cast from DMAc solutions have tensile strengths of 89–114 MPa, elongations at break of 5.8–8.8%, and initial moduli of 2.2–3.2 GPa. These poly(ester amide)s show glass transition temperatures between 166 and 256°C, 10% weight loss temperatures ranging from 395 to 445°C, and char yields higher of 46–56% at 800°C in nitrogen, and also exhibit low dielectric constants ranging from 3.31 to 3.52 (1 MHz), and high transparency with an ultraviolet–visible absorption cut-off wavelength in the 362–380 nm range. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012 相似文献
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N,N-二甲基色胺衍生物合成研究 总被引:2,自引:0,他引:2
以四氢呋喃和对氰甲基盐酸苯肼 (Ⅹ )为主要原料合成了色胺衍生物N ,N 二甲基 2 { 5 [(3 氨基 1,2 ,4 口恶二唑 5 基 )甲基 ] 1 氢 吲哚 3 基 }乙胺 (Ⅶ )。四氢呋喃和氯化氢反应 ,得到4 氯丁醇 ( ) ,产率为 6 2 % ;用氯铬酸吡啶盐氧化得 4 氯丁醛 ( ) ,产率为 6 1% ;经缩醛化得 4 氯丁醛缩甲醇 ( ) ,产率为 5 6 % ;用二甲胺取代得 4 (N ,N 二甲胺基 )丁醛缩甲醇(Ⅸ ) ,产率为 86 % ;Ⅸ与Ⅹ经环化得N ,N 二甲基 2 [5 (氰甲基 ) 1氢 吲哚 3 基 ]乙胺 (Ⅺ ) ,产率为 76 % ;Ⅺ经酯化得N ,N 二甲基 2 [5 (乙酯甲基 ) 1氢 吲哚 3 基 ]乙胺 (Ⅻ ) ,产率为 82 % ;Ⅻ与羟基硫酸胍缩合得产物 (Ⅶ ) ,产率为 6 6 %。 相似文献
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喹唑啉环的合成方法改进 总被引:1,自引:0,他引:1
以2-氨基-4-(3-氯丙氧基)-5-甲氧基苯腈和N,N-二甲基甲酰胺二甲缩醛为原料,乙醇作溶剂,回流120 min,合成了喹唑啉环,反应收率达94.3%。 相似文献
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The miscibility of poly(n‐butyl methacrylate‐co‐methacrylic acid) containing 18 mol % methacrylic acid (BMAM‐18) and poly(styrene‐co‐N,N‐dimethyl acrylamide) containing 17 mol % N,N‐dimethyl acrylamide (SAD‐17) was investigated with viscometry, differential scanning calorimetry (DSC), and Fourier transform infrared (FTIR) spectroscopy. The DSC analysis showed a single glass‐transition temperature for all the blends, indicating that these copolymers were miscible over the entire composition range. The glass‐transition temperatures of these blends were higher than those calculated with the additivity rule. This was characteristic of the presence of specific interactions. The interactions between BMAM‐18 and the tertiary amide of SAD‐17 were studied with FTIR spectroscopy, which revealed that hydrogen‐bonding interactions occurred between the hydroxyl groups of BMAM‐18 and the carbonyl amide of SAD‐17. A new band characterizing these interactions appeared around 1613 cm?1. The quantitative results showed that the fraction of the associated amide increased with an increase in the amount of the acidic BMAM‐18 copolymer. Although BMAM‐18 and SAD‐17 led to homogeneous solutions in butan‐2‐one, as the concentration of N,N‐dimethyl acrylamide increased to 32 mol % [as within the poly(styrene‐co‐N,N‐dimethyl acrylamide) containing 32 mol % N,N‐dimethyl acrylamide], complexation occurred when this latter compound was mixed with BMAM‐18 in butan‐2‐one. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 2717–2724, 2006 相似文献