α,α＇-二氨基己二酸四亚甲基膦酸的合成

以α,α＇-二溴代己二酸二乙酯为原料,经Gabriel、水解和Mannnich 3步反应,合成出α,α＇-二氨基己二酸-N,N,N＇,N＇-四亚甲基膦酸,产物的总收率30.6%。用^13CNMR、^1HNMR、IR、MS和元素分析对合成产物及有关中间体——α,α＇-二邻苯二甲酰亚胺基己二酸二乙酯、α,α＇-二氨基己二酸进行了表征。     

TRFIA螯合剂中间体2,6-二(3′-溴甲基-1′-吡唑基)-4-溴吡啶的合成、分离与表征

以2,6-二（3-甲基-1-H-吡唑基）-4-溴吡啶为原料,经重氮化、溴化合成了新型时间分辨荧光免疫分析（TR-FIA）双功能螯合剂中间体2,6-二（3＇-溴甲基-1＇-吡唑基）-4-溴吡啶,通过IR、GC-MS1、HNMR和元素分析等对其结构进行了确认,探讨了合成条件及反应机理。同时,通过GC-MS1、HNMR和元素分析等对第一副产物4-溴-2-（3＇-溴甲基-1＇-吡唑基）-6-（3＇-甲基-1＇-吡唑基）吡啶的结构也进行了确认,以其为原料可继续合成目标化合物,大幅提高总产率。     

3,3＇-二羧基-BINOL类配体与过渡金属配合物的合成及晶体培养

3,3＇-二羧基-BINOL配体的羧基可以有效桥联金属离子形成配位聚合物,文章采用3,3＇-二羧基-2,2＇-二羟基-1,1＇-联萘1,3,3＇-二羧基-2,2＇-二甲氧基-1,1＇-联萘3做为配体与过渡金属离子钴、铅、镉、锰、锌等在溶液扩散的条件下形成系列单晶,配体与金属离子的摩尔比为1∶1。对形成的晶体进行了红外分析。     

新型聚酰亚胺薄膜的制备及其性能研究

采用2,4,6-三甲基间苯二胺（TMmPDA）、4,4＇-二氨基二苯醚（DADPE）和3,3＇,4,4＇-四羧基联苯二酐（BP-DA）为主原料,摩尔比为1∶4∶5,合成得到了三甲基间苯二胺型聚酰胺酸（TMPAA）溶液,涂膜,热亚胺化,制得了三甲基间苯二胺型聚酰亚胺（TMPI）薄膜,并对其粘度、力学性能等进行了研究。     

水合肼还原法制取3,3＇-二胺基4,4＇-二羟基二苯砜的工艺研究

以4,4＇-二羟基二苯砜为原料,经硝酸硝化、水合肼还原反应制取3,3＇-二胺基4,4＇-二羟基二苯砜。考察了水合肼还原反应催化剂用量、溶剂配比、反应温度、水合肼用量对反应的影响。得到较适宜的工艺条件：66g4,4＇-二羟基二苯砜制得硝化物的量,催化剂氯化铁1.4g,活性炭18g;质量分数80%水合肼42g,溶剂V（甲醇）/V（水）为7∶1共800mL,于70℃反应6h,收率66%（以4,4＇-二羟基二苯砜计）。这种合成方法简便、反应条件温和、反应溶剂价格低廉、易得,适合工业化生产要求。     

4,4'-二羟甲基联苯的提纯工艺研究

采用对索式萃取、超声提取和溶液结晶等三种分离提纯4,4＇-二羟甲基联苯的工艺进行了对比实验,确定了合适的分离提纯工艺。并采用单因素实验优化了分离提纯的工艺条件。结果表明产品的纯度达到99.2％,产品收率81．62％。     

2,2＇-亚甲基双（1,3-环己二酮）的制备

以水为溶剂,1,3-环己二酮与甲醛和二甲胺进行Mannich反应,生成2-亚甲基（1,3-环己二酮）,该生成物进而与1,3-环己二酮经Michael缩合,得到2,2＇-亚甲基双（1,3-环己二酮）粗产物,将其采用弱碱中和的简单分离方法进行提纯,所得最终产物中2,2＇-亚甲基双（1,3-环己二酮）纯度为99.8%（质量分数）,收率为92.8%;考察了反应温度、时间、pH及提纯用碱的种类对反应产物收率和纯度的影响;最佳制备条件为：20℃、2.5 h、pH=6、弱碱NaHSO3中和,整个制备过程操作简单,成本较低.     

2,2＇-偶氮二异丁基脒盐酸盐的合成

以偶氮二异丁腈（AIBN）为主要原料,经Pinner反应制备了2,2＇-偶氮二异丁亚胺甲醚盐酸盐,再进一步合成2,2＇-偶氮二异丁基脒盐酸盐。最佳合成工艺条件为n（AIBN）：n（甲醇）：n（氯化氢）=1：2.5：2.6,反应温度15～20℃,反应时间24h,得到2,2＇-偶氮二异丁亚胺甲醚盐酸盐,收率99.1%;以无水甲醇为溶剂,与氨气反应合成了2,2＇-偶氮二异丁脒盐酸盐,反应温度10～15℃,反应时间16h,收率85.1%,纯度≥99.5%。产物用红外光谱、核磁共振等进行了确证。     

3,3＇,4,4＇-二苯醚二酐的合成工艺研究

以N-甲基-4-硝基邻苯二甲酰亚胺为起始原料,二甲基亚砜为溶剂,亚硝酸钾为催化剂进行偶联反应,所得偶联产物经水解、酸析、无水化合成3,3＇,4,4＇二苯醚二酐。对影响偶联反应的因素反应温度和反应时间进行了考察,通过优化反应条件,确定了最佳反应温度为165℃,最佳反应时间为11h,偶联产物的质量收率最高为43%。     

d，l-2-乙酰氨基-3-（3＇-吲哚）丙酸的制备和拆分研究

以3-吲哚基-甲基-乙酰氨基丙二酸二乙酯为原料,经选择性水解制备d,l-2-乙酰氨基-3-（3＇-吲哚）丙酸,最佳反应条件是：反应温度70～80℃,反应时间为6h,物料3-吲哚基-甲基-乙酰氨基丙二酸二乙酯与氢氧化钠的摩尔比为1：2.5,产率可达到84.4％ 研究了利用对硝基苯基-2-氨基-1,3-丙二醇为拆分剂对d,l-2-乙酰氨基-3-（3＇-吲哚）丙酸进行拆分,d-2-乙酰氨基-3-（3＇-吲哚）丙酸的拆分纯度为98％。     

3,3′,5,5′-四氯-2,2′,4,4′,6,6′-六硝基草酰苯胺的合成

在碱性介质中,草酰氯与间二氯苯胺反应得到3,3′,5,5′-四氯草酰苯胺(Ⅰ),收率78%。Ⅰ在50℃于浓硫酸〔w(H2SO4)=98%〕-发烟硝酸〔w(HNO3)=98%〕中硝化2 h,得到3,3′,5,5′-四氯-2,2′,6,6′-四硝基草酰苯胺(Ⅱ),收率82%。Ⅱ在100℃于发烟硫酸〔w(SO3)=20%〕-发烟硝酸〔w(HNO3)=98%)中硝化8 h,得到目标化合物3,3′,5,5′-四氯-2,2′,4,4′,6,6′-六硝基草酰苯胺(Ⅲ),收率为94.7%。三步总收率为60.6%。通过红外光谱、核磁共振、质谱及元素分析确定了三种化合物的结构。     

Syntheses and Characterization of Two New M(II)-5,5′-dimethyl-2,2′-bipyridine (M = Cd and Pb) Coordination Polymers and Study of Their Thermal and Electrochemical Properties

Two new cadmium(II) and lead(II)-thiocyanato coordination polymers with 5,5′-dimethyl-2,2′-bipyridine (5,5′-dm-2,2′-bpy) as chelating ligands were synthesized and characterized by elemental analysis, IR and ¹H NMR spectroscopy and by X-ray crystallography. Thermal and electrochemical properties were also studied as well. These complexes have formed formula [Cd(5,5′-dm-2,2′-bpy)(NCS)₂]_n (1) and [Pb(5,5′-dm-2,2′-bpy)(CH₃COO)(NCS)]_n (2). The coordination numbers of Cd^II in 1 and Pb^II in 2 are six (CdN₄S₂) and seven (PbN₃O₃S₂), respectively. In 2, “stereo-chemically active” electron lone pairs and the coordination spheres were hemidirected. Bridging properties of thiocyanato anions in 1 and 2 created one- and two-dimensional coordination polymers, respectively. The supramolecular features in these complexes were guided and controlled by weak directional intermolecular interactions.     

新型光致变色材料的合成研究

以联苯甲酰、邻氯苯甲醛为原料 ,经过环合、氧化合成了光致变色化合物 2 ,2′ 二邻氯苯基 4 ,4′ ,5 ,5′ 四苯基 1,2′ 二咪唑。讨论了多种因素对氧化反应收率的影响 ,其最佳工艺条件为 :以乙二醇一乙醚为分散剂 ,单体 2 邻氯苯基 4 ,5 二苯基咪唑与氧化剂K3 [Fe(CN) 6]的物质的量比为 1∶2 ,反应温度 2 0～ 2 5℃ ,反应时间 5h ,总收率为 84 .9%。     

Dyeing and fastness properties of polyamide fabrics using some acid‐based monoazo disperse dyes

A series of monoazo disperse dyes derived from naphthalimide containing butyric acid has been applied on polyamide fabrics. The build up and dyeing properties of these dyes such as leveling property, wash, light, perspiration for alkaline and acidic conditions, and rubbing fastnesses on polyamide fabrics have been investigated. The results showed that the applied dyes are capable of producing red to bluish red hues on polyamide fabrics. Because of the presence of both carboxylic acid and hydroxyl groups on the molecular structure of Dye 3, it showed desired and more strength in respect to other used dyes. Comparing the build up of these dyes to commercial dyes such as disperse red 60 and disperse red 73 revealed that most of the used dyes have higher build up in comparison to the commercial ones. Measurement of fastness properties of dyed samples indicated that they have good wash (4–5), rubbing (4), perspiration (4–5), and heat fastnesses (4–5) and they possess less than moderate light fastness (3–4) on polyamide fabrics. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011.     

Control of the J-Aggregation Phenomenon by variation of the N-alkyl-substituents

Cyanine dyes ( 1a–d ) with the 5,5′,6,6′-tetrachloro-1,1′-dialkyl-3,3′-di-(3-carboxypropyl)-benzimidocarbocyanine chromophore differing only in the chain length of their alkyl groups in 1,1′-position have been synthesized, spectroscopically characterized, and compared with 5,5′6,6′-tetrachloro-1,1′-diethyl-3,3′-di-(4-sulfobutyl)-benzimidocarbocyanine( TDBC ). In aqueous solution the dyes form J-aggregates which, depending on the alkyl group chain length, exhibit J-bands differing in spectral positions, bandwidth, and in the number of peaks.     

2,2-二甲基-5,5-二乙氧羰基-1,3-二氧六环的合成

以丙二酸二乙酯为原料,对2,2-二甲基-5,5-二乙氧羰基-1,3-二氧六环的合成进行了研究。     

Synthesis of Some Polymeric Dyes

Polymeric dyes derived from 4-vinyl phthalic acid and 2,2′-divinyl benzidine were prepared. Diethyl 4-vinyl phthalate was synthesized as follows: The Diels-Alder reaction between 2-ethyl butadiene and dichloromaleic anhydride led to the formation of 4-ethyl phthalic anhydride which was esterified, α-brominated in the side chain by NBS, and dehydro-brominated by heat. The resulting monomer was polymerized and polydiethyl 4-vinyl phthalate was reacted with phenol and resorcinol to yield “polyphenolphthalein” and “polyfluorescein” respectively. 2,2′-Divinyl benzidine was diazotized and coupled with naphthionic acid, anthranilic acid and N,N′-dimethylaniline respectively, but the resulting vinylic dyes did not polymerize due to steric reasons. However, polymeric dyes were obtained by homopolymerizing, or copolymerizing, 2,2′-divinyl benzidine with vinyl monomers, diazotizing the corresponding soluble polymers and coupling them with the above reagents. All the polymeric dyes exhibited indicator functions, changing their colour in basic or acidic media.     

Resistive switching characteristics of polyimides derived from 2,2′‐aryl substituents tetracarboxylic dianhydrides

2,2′‐Position aryl‐substituted tetracarboxylic dianhydrides including 2,2′‐bis(biphenyl)‐4,4′,5,5′‐biphenyl tetracarboxylic dianhydride and 2,2′‐bis[4‐(naphthalen‐1‐yl)phenyl)]‐4,4′,5,5′‐biphenyl tetracarboxylic dianhydride were synthesized. A new series of aromatic polyimides (PIs) were synthesized via a two‐step procedure from 3,3′,4,4′‐biphenyl tetracarboxylic dianhydride and the newly synthesized tetracarboxylic dianhydrides monomers reacting with 2,2′‐bis[4′‐(3″,4″,5″‐trifluorophenyl)phenyl]‐4,4′‐biphenyl diamine. The resulting polymers exhibited excellent organosolubility and thermal properties associated with T_g at 264 °C and high initial thermal decomposition temperatures (T_5%) exceeding 500 °C in argon. Moreover, the fabricated sandwich structured memory devices of Al/PI‐a/ITO was determined to present a flash‐type memory behaviour, while Al/PI‐b/ITO and Al/PI‐c/ITO exhibited write‐once read‐many‐times memory capability with different threshold voltages. In addition, Al/polymer/ITO devices showed high stability under a constant stress or continuous read pulse voltage of ? 1.0 V. Copyright © 2011 Society of Chemical Industry     

Reaction of isoprene with phenols catalysed by nickelocene and phenylmagnesium bromide

The reaction of isoprene with phenol, catalysed by nickelocene and phenylmagnesium bromide, yields 2,2-dimethylchroman, 2-(3′-methyl-2′-buten-1′-yl)phenol, 4-(3′-methyl-2′-buten-1′-yl)phenol, 2,2-dimethyl-8-(3′-methyl-2′-buten-1′-yl)chroman and 2,2-dimethyl-6-(3′-methyl-2′-buten-1′-yl)chroman. Reactions with other phenols were examined.     

水中"一锅"合成7,7-二甲基-4-(3-氯苯基)-5-氧代-3,4,5,6,7,8-六氢香豆素的洁净方法

研究了四丁基溴化铵(TBAB)催化下的水介质中,3-氯苯甲醛、丙二酸亚异丙酯和5,5-二甲基-1,3-环己二酮三组分缩合,一步合成系列7,7-二甲基-4-(3-氯苯基)-5-氧代-3,4,5,6,7,8-六氢香豆素。产物的结构经IR和1HNMR进行了表征确证。该方法具有反应条件温和、操作简便、环境友好的优点。