细胞分裂素6—BA合成新方法的研究

用医药工业的副产物乙酰基次黄嘌呤在弱酸条件下水解，生成次黄嘌呤经三氯氧磷在吡啶溶液中缩合，生成６－吡啶盐中间体，再与苄胺反应，制得高效植物细胞分裂素６－ＢＡ。     

新三氮烯类星色剂DBKDAAN的合成及其与镉的显色反应研究

合成了６个多取代的４′－硝基苯基重氮氨基偶氮苯类试剂。研究了它们与镉（Ⅱ）的显色反应。在表面活性剂ＴｒｉｔｏｎＸ－１００存在下６个试剂均有较高的反应灵敏度，其中以ＤＢＫＤＡＡＮ效果最好。对其与镉的显色反应进行了较为系统的研究，配合物的最大吸收峰为５８０ｎｍ，表观摩尔吸光系数为１．７４×１０５Ｌ·ｍｏｌ－１·ｃｍ－１。镉的浓度在０～６μｇ／２５ｍＬ之间符合比耳定律。     

新荧光试剂3─苯基─5─（4′─硝基─2′─羧基苯偶氮）─2─硫代─4─噻唑啉酮的合成及其应用研究

报道了新荧光试剂３－苯基－５－（４′－硝基－２′－羧基苯偶氮）－２－硫代－４－噻唑啉酮（３Ｐ－４ＮＲＡＣＰ）的合成，通过元素分析、红外光谱、核磁共振谱及质谱确证了其结构。在ｐＨ５．６时，它与铜（Ⅱ）形成稳定的荧光螫合物，在γｅｘ／λｅｍ＝３０５ｎｍ／４０５ｎｍ处产生强荧光，其荧光强度与铜（Ⅱ）的浓度在１．５７×１０－１０～１．８９×１０－８ｍｏｌ／２５ｍＬ范围内呈线性关系，灵敏度达１．５７×１０－１０ｍｏｌ／ｇ的铜（Ⅱ）。用此方法测定了杂交米、糯米及香米中的痕量铜（Ⅱ），结果满意。     

氯化溴法合成2，4，6─三溴苯酚的研究

介绍了氯化溴在盐酸和卤代烃的多相介质中合成２，４，６－三溴苯酚（简称ＴＢＰ）的方法，系统地研究了各种因素对合成ＴＢＰ的影响。确定了优惠工艺条件，并提出了产品的后处理方法     

8─羟基喹啉─5─磺酸柱前衍生反相HPLC分离测定痕量Al（Ⅲ）、Co（Ⅲ）、Fe（Ⅲ）和Pd（Ⅱ）

本文采用８－羟基喹啉－５－磺酸（ＨＱＳ）为柱前衍生试剂，用含有１０ｍｍｏｌ·Ｌ－１的四丁基溴化铵（ＴＢＡ＋Ｂｒ－）、７．５×１０－５ｍｏｌ·Ｌ－１的ＥＤＴＡ和２０ｍｍｏｌ·Ｌ－１的ｐＨ５．６乙酸－乙酸钠缓冲溶液的甲醇－水（４５：５５，Ｖ／Ｖ）溶液为流动相，以Ｃ１８硅烷化载体为固定相，１６ｍｉｎ内分离测定了Ｃｏ（Ⅲ）、Ｆｅ（Ⅲ）、Ａｌ（Ⅲ）和Ｐｄ（Ⅱ）的ＨＱＳ的配合物、信噪比为３时，检出限分别为：Ｃｏ（Ⅲ）０．９ｐｐｂ、Ｆｅ（Ⅲ）１．５ｐｐｂ和Ｐｄ（Ⅱ）５．４ｐｐｂ，方法灵敏度高，干扰少，用于测定试剂级盐酸，硝酸和中国红茶样品中的这些离子，结果良好。     

N—丁基—3—氰基—4—甲基—6—羟基吡啶—2—酮的合成

Ｎ┐丁基┐３┐氰基┐４┐甲基┐６┐羟基吡啶┐２┐酮的合成孔祥文＊周斌何鸿斌（沈阳化工学院精细化工系，沈阳１１００２１）张静（沈阳化工研究院，沈阳１１００２１）Ｎ－丁基－３－氰基－４－甲基－６－羟基吡啶－２－酮是合成医药、农药和染料的重要中间体［１］，...     

羟丁／聚酯并用型聚氨酯弹性体的研究

本文通过端羟基聚了二烯（ＨＴＰＢ）与聚已二酸乙二醇丙二醇酯二醇并用与甲苯二异氰酸酯（ＴＤＩ）、扩链剂２，４（或２，６）─二氨基－３，５－二甲硫基甲苯／Ｎ，Ｎ＇─双（２─羟丙基）苯胺、催化剂制备聚氨酯弹性体，研究了多元醇并用比、扩链剂并用比、制备方法等对弹性体的力学性能、动态生热性的影响，并观察了弹性体的微观结构。     

3-(2-芳基-3-乙酰基-1,3,4-噁二唑啉-5-基)-1,1-二甲基- 1,2,5,.6-四氢吡啶碘化物的制备及结构确证

报道了烟酰肼与取代芳醛反应生成相应的烟酰芳腙在醋酐催化下生成2芳基－3－乙酰基－5－（吡啶－3－基）－1，3，4恶二唑啉，不经分离直接与碘甲烷作用生成相应的季铵盐，接着用硼氢化钠还原季铵化物而得含四氢吡啶环和恶唑啉环的新化合物3－（2－芳基－3－乙酰基－1，3，4－恶二唑啉－5－基）－1，1－二甲基－1，2，5，6－四氢吡啶碘化物，其结构经IR，^1HNMR，MS和元素分析确诊。     

钛氧化物中微量镁的萃取—分光光度测定

研究了用５,７－二碘－８－羟基喹啉和罗丹明６Ｇ萃取－分光光度法测定分析纯二氧化钛和自制高纯三氧化二钛中微量镁的含量,待测样品在硫酸和硫酸铵作用下溶解为硫酸钛;而其中含有的镁则转化为硫酸镁。在微碱性溶液中与５,７－二碘－８－羟基喹啉及罗丹明６Ｇ反应生成（Ｒｈ６Ｇ）＾＋「Ｍｇ（ＯｘＩ２）３」＾－,用甲苯萃取。     

钢材酸洗液和钝化液中亚硝酸根的简易测定

提出了用分光光度法测定钢材酸洗液和钝化液中亚硝酸根（或盐）的简易测定法。在硝酸介质中，ＮＯ２－与亚铁氰化钾Ｋ４［Ｆｅ（ＣＮ））６］生成黄色Ｆｅ（ＣＮ）３－６络阴离子［在低浓度溴化＋六烷基吡啶（ＣＰＢ）存在下］，该配合物吸收峰（λｍａｘ）为４３０ｎｍ，摩尔吸光系数（ε）为３．５×１０４Ｌ／（ｍｏｌ·ｃｍ）。ＮＯ２－的含量在０～０．８０μｇ／ｍＬ范围内，服从朗伯—比尔定律。一般常见阴阳离子均不干扰测定结果。     

6-氯和6-甲氧基嘌呤核苷的合成

以四乙酰呋喃核糖(Ⅰ)和6 氯嘌呤(Ⅱ)为原料,在对甲苯磺酸(TsOH)存在下,运用微波固态反应得到中间体2′,3′,5′ 三乙酰基 6 氯嘌呤核苷(Ⅲ),收率为80 1%。该中间体再用NH3/CH3OH和Na2CO3/CH3OH处理,分别合成了6 氯 9 β D 嘌呤核苷(Ⅳ)和6 甲氧基 9 β D 嘌呤核苷(Ⅴ),收率分别为78 8%和76 9%。Ⅳ和Ⅴ的总收率分别为63 1%和61 6%,结构经1HNMR和元素分析证实。最佳的缩合条件是n(Ⅰ)∶n(Ⅱ)=1∶1,m(TsOH)/m(6 氯嘌呤)=0 03,595W微波辐射4 5min,462W微波辐射1min和119W微波辐射0 5min;生成Ⅳ的氨解条件为室温反应2h,生成Ⅴ的碱解条件为回流5h。     

Pure component recovery from polyamide 6/6 6 mixtures by selective dissolution and reprecipitation

A selective dissolution/reprecipitation technique was applied for the effective recovery of Polyamide 6 (PA 6) and Polyamide 6 6 (PA 6 6) from their mixtures. The proposed process comprises mainly selective polyamide dissolution in an appropriate solvent at a specific temperature, reprecipitation of the polymer from the solution by addition of a nonsolvent, washing, and drying. A model mixture of virgin PA 6 and PA 6 6 pellets was initially tried, whereas in a following stage the selective dissolution technique was applied for the recovery of a PA‐copolymer layer from a three‐layered bottle end product also containing HDPE and EVA. End‐group analysis, dilute solution viscometry, and differential scanning calorimetry were used to assess the molecular weight preservation and crystallizability of the recycled polyamides. The recycled materials demonstrated excellent retention of the properties studied, although in the copolymer case, due to hydrolysis, a molecular weight decrease was detected, accompanied with a slight compositional shift, favoring the PA6 6 presence in the final product. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 1924–1930, 2002     

6-Trifluoromethylindole

6-Trifluoromethylindole was prepared by reductive cyclization of 2-nitro-4-trifluoromethylbenzyl cyanide. The indole was converted into the corresponding 3-aldehyde and 3-carboxylic acid.     

6-Trifluoromethyltryptamines

A series of 6-trifluoromethyltryptamines has been prepared from 6-trifluoromethylindole as the starting material. Conversion of the CF₃ group to CH₃ was observed during the reduction of some of these compounds with lithium aluminum hydride.     

Thermal and mechanical behavior of polyamide 6/polyamide 6I/6T blends

The thermal and mechanical properties of blends, obtained by mixing polyamide 6 (PA6) and an amorphous aromatic copolyamide G21 (ISO nomenclature PA 6I/6T), were investigated by differential scanning calorimetry, dynamic mechanical analysis, and mechanical tensile tests. Quenched blends show a single glass transition temperature; the T_g-composition trend was interpreted by means of the Gordon–Taylor equation. The half-time of crystal-lization decreases by increasing the G21 content and this indicates a depression of the overall crystallization rate. A small decrease in the equilibrium melting temperature of PA6 in the blends was observed; this finding suggests that the interaction parameter in PA6/G21 blends is probably very small. The dynamic mechanical analysis of crystallized blends suggests the presence of a homogeneous amorphous phase even if the crystallization of PA6 occurred. The tensile mechanical properties reveal that G21 acts as stiffener of PA6. The collected experimental data suggest that PA6 and G21 are miscible in the composition range investigated. © 1996 John Wiley & Sons, Inc.     

Ölbindevermögen von Mineralozokeriten

Oil-bindung Capacity of Mineral Ozocerites It was attempted, by determining the slip point of the pastes obtained from different oils and mineral waxes, to find out and measure the influence of the quantity, viscosity of the oil, recrystallization tendency and homogenity as well as to characterise the oil-binding capacity of different hydrocarbon waxes. In view of the considerable rise in purity demands, the oil-binding capacity of highly refined microwaxes or mineral ozocerites was also investigated.     

Palmöl und Palmkernöl

Palm Oil and Palm Kernel Oil Adulteration of palm oil with palm stearin can be recognized by examining the ration of the triglycerides PPP to MOP, which lies in pure palm oil between 3.5 and 4.5 and is elevated in the case of adulteration. The content of palmitic acid and the solid fat content are additional indications. Adulteration of coconut and palm kernal oils with palm kernel olein is best recognized by measuring the iodine number (which is max. 11 for coconut oil and 19 for palm kernel oil) and also by the content of stearic, oleic and linoleic acids, the sum of which should not exceed 11.5% for coconut oil and 22% for palm kernel oil respectively. The content of triglycerides with carbon number 46 to 54 may additionally be used.