3-氯-N-正丁基-N-[(4-甲氧基-6-二甲氨基-1,3,5-三嗪基-2-)氨基甲酰基]苯磺酰胺的合成

本文报道了磺酰脲类化合物3-氯-N-正丁基-N-[(4-甲氧基-6-二甲氨基-1,3,5-三嗪基-2-)氨基甲酰基]苯磺酰胺的合成方法、分析测试数据及其室内生测结果,表明该化合物具有很高的除草活性。     

2-羟基-4-(N-乙基-N-异丁基)氨基-2’-羧基二苯酮的合成工艺

目前有关荧烷染料中间体的合成方法国内少有报道。2-羟基-4-(N-乙基-N-异丁基)氨基-2’-羧基二苯酮是一种重要的荧烷类压热敏染料中间体,本文以N-乙基-N-异丁基间氨基苯酚为原料与邻苯二甲酸酐在氮气保护下反应合成,并在反应后使用NaOH溶液分解副产物,以提高产物纯度,通过HPCE测定产物纯度达到96.36%(面积归一法)。使用TLC对反应进程进行监测,并通过UV对TLC检测结果进行确认,详细讨论了物料比、温度和时间等条件对反应的影响,并得出二苯酮合成反应中N-乙基-N-异丁基间氨基苯酚与邻苯二甲酸酐摩尔比为1∶1.5,温度为110℃,时间为15h时反应效果最佳。副产物若丹明染料分解反应中NaOH溶液浓度为33.3%,N-乙基-N-异丁基间氨基苯酚与NaOH的质量比为1∶7.5,温度为90℃,时间为9h时反应效果最佳。最后通过IR和UV对目标产物结构进行确认。     

C.I.酸性蓝264及N-甲基-N-(4-氨基苄基)-4-甲苯磺酰胺的合成

N-甲基-N-(4'-氨基苄基)-4-甲苯磺酰胺的合成包括三步反应,首先由对甲苯磺酰氯与甲胺反应得到N-甲基-4-甲基苯磺酰胺,再与对硝基苄基溴反应引入苄基,然后在铁催化剂存在下用水合肼将硝基还原,得到N-甲基-N-(4'-氨基苄基)-4-甲苯磺酰胺;该工艺重现性好,三废少,三步反应总收率81%.得到的N-甲基-N-(4'-氨基苄基)-4-甲苯磺酰胺与溴胺酸反应即得C.I.酸性蓝264,该染料染色时对染浴的pH不敏感、竭染率高、水洗牢度好.     

3-氨基-4-氯-N-(3-氯-2-甲基苯基)苯甲酰胺的合成

以3-硝基-4-氟苯甲酸、3-氟-2-甲基苯胺为原料,经3步合成3-氨基-4-氯-N-(3-氯-2-甲基苯基)苯甲酰胺,该工艺条件温和,操作简单,适合工业化生产。并利用红外、质谱、液相、元素分析对产品进行了鉴定。     

N’-3-(二甲基)-丙基-(N-全氟丁基磺酰基-N-烷基磺酰基)-氧化胺的合成及表面性能

以全氟丁基磺酰氟与N,N’-二甲基-1,3-丙二胺为原料制备得到全氟丁基磺酰胺,然后分别与己基磺酰氯和辛基磺酰氯反应得到带烷基支链的全氟丁基磺酰胺,最后将两中间产物与过氧化氢氧化得N’-3-(二甲基)-丙基-(N-全氟丁基磺酰基-N-烷基磺酰基)-亚胺氧化物。通过MS和1H NMR等方法对产物进行了表征,表面张力等性能测试表明,产物具有较好的表面活性,可以作为全氟辛基磺酰胺类表面活性剂的替代品。     

9-[(4-氟)-3-羟基甲基丁基]鸟嘌呤(FHBG)的改进合成方法

报道了9-[(4氟-)-3羟-基甲基丁基]鸟嘌呤(FHBG,Ⅱ)的改进合成方法,对起始原料喷昔洛韦(Ⅲ)的氨基和一个羟基用4-甲氧基氯化三苯甲烷保护,对另一个羟基磺酯化,得到N2-(p-甲氧基苯酰基二苯基甲基)-9-[(4甲-苯磺酰)-3-p-甲氧基苯酰基二苯基-甲氧基甲基丁基]鸟嘌呤(Ⅴ),收率为70.5%;再用四丁基氟化铵(TBAF)对化合物Ⅴ亲核取代4-甲苯磺酰基团,水解脱去保护基,即得FHBG。产品经1HNMR、IR、MS表征,并用HPLC分析了Ⅴ和Ⅱ,保留时间分别为5.89 m in和4.41 m in,积分计算质量分数分别为w(Ⅴ)=99.5%和w(Ⅱ)=99.3%。     

2-甲基-5-(4-甲氧基苯磺酰胺)萘并[1,2-b]呋喃-3-羧酸乙酯的合成

乙酰乙酸乙酯与对甲苯胺、磷酸二氢钾反应得到3-(对甲苯氨基)-2-丁烯酸乙酯(化合物3);4-氨基-1-萘酚盐酸盐与甲氧基苯磺酰氯反应得到4-甲氧基-N-(4-羟基萘)苯磺酰胺(化合物6),之后经高碘酸钠氧化得到4-甲氧基-N-(4-氧代萘)苯磺酰胺(化合物7);中间体3和7发生环化得到目标物2-甲基-5-(4-甲氧基...     

3-(N,N-二甲氨基)甲酰氧基-4-苯基-5-苯甲酰基-N-甲基-2-吡咯烷酮的制备及生物活性初步评价

以3-羟基-4-苯基-5-苯甲酰基-N-甲基-2-吡咯烷酮(1)为原料,用N,N-二甲氨基甲酰氯将其3位羟基酯化,得3-(N,N-二甲氨基)甲酰氧基-4-苯基-5-苯甲酰基-N-甲基-2-吡咯烷酮(2),反应总收率为4.6%。以抑制乙酰胆碱酯酶作为生物活性评价指标,实验结果显示,其对乙酰胆碱酯酶无抑制作用。     

依福地平中间体3-氨基-2-丁烯酸-2-(N-苄基-N-苯基)氨基乙酯的合成

以N-苄基苯胺为原料,经N-烷基化、酯交换、氨基取代3步反应,得到新型钙通道阻滞剂依福地平关键中间体3-氨基-2-丁烯酸-2-(N-苄基-N-苯基)氨基乙酯,总收率达63.4%。该方法原料易得、操作简便、反应条件温和,适合工业化生产。     

N''''-取代-4-卤代-N-甲基-4′-甲烷磺酰氨基二苯甲酮腙衍生物的合成与生物活性

以对硝基苯甲酰氯、卤代苯、甲烷磺酰氯、水合肼等为原料合成4-卤代-N-甲基-4′-甲烷磺酰氨基二苯甲酮腙,后者与酰氯、醛和酮等反应得到21种新型N′-取代-4-卤代-N-甲基-4′-甲烷磺酰氨基二苯甲酮腙衍生物.所得化合物结构均经1H NMR和MS表征;初步生物活性测试表明这些化合物具有良好的杀虫活性.     

K_2O-Al_2O_3-WO_3三元系中Al_2(WO_4)_3-K_2O和Al_2(WO_4)_3_K_2WO_4截面的相平衡研究

用DTA和XRD方法研究了K_2O-Al_2O_3-WO_3三元系中Al_2(WO_4)_3-K_2O和Al_2(WO_4)_3-K_2WO_4截面相平衡关系。在Al_2(WO_4)_3-K_2O赝二元系中由包晶反应形成三个化合物:2Al_2(WO_4)_3·K_2O_4、Al_2(WO_4)_3·K_2O和Al_2(WO_4)_8·3K_2O。其包晶反应温度分别为937±3℃、786±3℃和902±3℃。在Al_2(WO_4)_3-K_2WO_4截面中,33.3mol%K_2WO_4和50mol%K_2WO_4组份其主要成份分别为2Al_2(WO_4)_3K_2O和Al_2(WO_4)_3K_2O。     

Photoluminescence properties of Eu-doped WO3-Eu2(WO4)3 composites and single-phase Eu2(WO4)3 powders

The development of highly stable and efficient oxide-based red phosphors is urgently required for next-generation lighting devices. Herein, we report the micro/crystal structures and luminescent properties of single-phase Eu₂(WO₄)₃ and Eu³⁺-doped WO₃-Eu₂(WO₄)₃ composite phosphors prepared by a one-step conventional solid-state reaction method in air atmosphere. As increasing Eu contents in the mixtures of WO₃ and Eu₂O₃, the intensities of the X-ray diffraction peaks of Eu₂(WO₄)₃ increased while that of WO₃ decreased. The photoluminescence intensity of the synthesized phosphors increased with increase in the Eu content when calcined at 900 °C, while it degraded at a higher temperature. Red-emitting single-phase Eu₂(WO₄)₃ powders were successfully obtained when the WO₃ and Eu₂O₃ powders were calcined in the ratio of 3:1. The intensity of the red emission spectra of the Eu₂(WO₄)₃ phosphor was higher than those of the 6, 12, and 24 at.% Eu-added WO₃ composites at excitation wavelengths of 394 and 465 nm. On the other hand, the intensity of emission from the single-phase phosphor was lower than that of the Eu-doped WO₃-Eu₂(WO₄)₃ composites under excitation of UV light at 254 nm. Thus, we propose two prospective phosphors for application as red phosphors at various wavelengths.     

Solubility in system CO(NH2)2-NH4NO3-H3PO4-H2O

Solubility data were obtained in the system CO(NH₂)₂-NH₄NO₃-H₃PO₄-H₂O at 0° and 15°C. The results show that high-analysis solution fertilizers can be produced from standard urea-ammonium nitrate (UAN) and phosphoric acid materials. These acidic solution fertilizers contain up to 35% total plant nutrient (TPN = N + P₂O₅ + K₂O), with N:P₂O₅ ratios varying from 20:1 to 1.5:1. Potential liquid products having fertilizer grades of 23-12-0, 26-9-0, 28-6-0, and 31-3-0 are feasible.     

2－甲基－3（4）－异丁硫基呋喃的合成

以２－甲基呋喃为原料合成肉味香料化合物２－甲基－３（４）－异丁硫基呋喃，对其结构进行了分析和鉴定。     

A synthesis of 4-hydroxy-2-trans-nonenal and 4-(3H) 4-hydroxy-2-trans-nonenal

4-Hydroxy-2-trans-nonenal, the most abundant and toxic unsaturated aldehyde generated during membrane lipid peroxidation, was synthesized starting from fumaraldehyde dimethyl acetal. In the first step of the synthesis, the fumaraldehyde dimethyl acetal was partially hydrolyzed using amberlyst catalyst to obtain the monoacetal. The 4-hydroxy-2-trans-nonenal was synthesized by the Grignard reaction of the fumaraldehyde monoacetal with 1-bromopentane. 4-Hydroxy-2-trans-nonenal, obtained as its dimethylacetal, was oxidized to its corresponding 4-keto derivative using pyridinium chlorochromate buffered with sodium acetate as the oxidizing agent. 4-(³H) 4-Hydroxy-2-trans-nonenal was obtained in one step by the sodium borotriteride reduction of the 4-keto derivative.     

Raman spectra of (NH4)4H2(SeO4)3 superionic single crystal

Raman spectra of (NH₄)₄H₂(SeO₄)₃ protonic conductor were studied at room temperature using a 1064 nm - excited Fourier transform (FT) - Raman spectroscopy. A tentative assignment of the external and internal vibrations is proposed.     

2－甲基－3（4）－乙酰硫基呋喃的合成

以２－甲基呋喃为原料合成了含硫香料化合物２－甲基－３（４）－乙酰硫基呋喃，并对其结构进行了分析鉴定。