二（2,4,4—三甲基戊基）膦酸从盐酸介质中萃取钍（Ⅳ）的机理

研究了二（２，４，４－三甲基戊基）膦酸的正辛烷溶液从盐酸介质中萃取钍的机理。在未控制离子强度下，萃取平衡反应为：Ｔｈ＾４＋＋Ｃｌ＾－＋３（ＨＡ）２（ｏ）→ＴｈＣｌＡ３（ＨＡ）３（ｏ）＋３Ｈ＾＋。在控制离子强度为１．０ｍｏｌ／Ｌ时，萃取反应为Ｔｈ＾４＋＋２Ｃｌ＾－＋３（ＨＡ）２（Ｏ）→ＴｈＣｌ２Ａ２．（ＨＡ）４（Ｐ）＋２Ｈ＾＋。用饮和法确定的萃合物组成为ＴｈＣｌＡ３．计算了萃取反应的平衡常数及热力学     

PTFE—乙醚柱反相萃取层析连续分离和测定镓（Ⅲ）铟（Ⅲ）的研究

研究了在抗坏血酸存在下的６ｍｏｌ／Ｌ ＨＢｒ介质作流动相，以ＰＴＦＥ（聚四氟乙烯）负载的乙醚作固定相，反相萃取层析使微量Ｇａ（Ⅲ），Ｉｎ（Ⅲ）与Ｆｅ＾３＋、Ｔｌ＾３＋、Ｍｏ＾６＋、Ａｕ＾３＋、Ｔｉ＾４＋、Ｂｉ＾３＋、Ａｌ＾３＋、Ｍｇ＾２＋、Ｃａ＾２＋、Ｎｉ＾２＋、Ｃｏ＾２＋、Ｃｄ＾２＋、Ｚｎ＾２＋、Ｐｂ＾２＋、Ｃｕ＾２＋等多种离子分离。留于柱上的铟、镓分别用ＨＣｌ（４ｍｏｌ／Ｌ）－Ｈ２Ｏ２（３％）     

溶胶-凝胶制备技术与新型催化材料Ⅲ.溶胶粒子表面修饰方法制备催化膜

提出用溶胶粒子表面修饰方法，结合溶胶－凝胶技术制备无机催化膜，该方法的基本原理是利用合适的金属配合物在胶粒表面吸附作用，经溶胶－凝胶过程，将活性组分结合到无机膜中，实验测定结果表明：（ＮｉＥＤＴＡ）＾２－，ＶＯ＾－３，ＭｏＯ＾２－４，（Ｐｄ（ＮＨ３）４＾２＋，ＰｄＣｌ＾２－４，ＰｔＣｌ＾２－６和ＲｈＣｌ＾３－６可用来修饰ＡｌＯＯＨ溶胶，以Ｐｄ／γ－Ａｌ２Ｏ３催化膜的制备为例，经三次溶胶－凝胶过程，     

卟啉化合物电化学性质研究 Ⅰ.5,10,15,20-四-(4-乙酰氧基苯)卟吩及其Cu、Zn、Fe、Co、Ni配合物的合成及循环伏安研究

本文报道了５，１０，１５，２０－四（４－乙酰氧基苯）卟吩（Ｔ（４ＡＯＰ）Ｐ）及其Ｃｕ，Ｚｎ，Ｆｅ，Ｃｏ，Ｎｉ配合物的合成及其在ＣＨ２Ｃｌ２－０．１ｍｏｌ／ＩＴＢＡＰ体系中的循环伏安（ＣＶ）。研究结果。ＣＶ实验表明：Ｃｕ＾２＾＋，Ｚｎ＾２＾＝，Ｎｉ＾２＾＋离子以稳定的＋２价存在于Ｔ（４ＡＯＰ）Ｐ中，电子转移反应在卟啉环上进行，而Ｆｅ＾３＾＋，Ｃｏ＾２＾＋离子在氧化还原过程中发生价态变化。实验发现...     

具有不同类型桥基的双核Cu（Ⅱ）—Schiff碱配合物的合成 …

合成了３个分别以Ｃ２Ｏ＾２－４（「Ｃｕ２（Ｌ１）２（ｏｘ）」，１），ＡｃＯ＾－（「Ｃｕ２（ＡｃＯ）（Ｌ２）２」ＢＦ４，２）和酚氧（「Ｃｕ２９Ｌ３０２」（ＣｌＯ４）２，３）为桥基的双核铜配合物，并测定了１的复配合物「Ｃｕ２（Ｌ１）２（ｏｘ）」「Ｆｅ（ＯＨ）２（Ｈ２Ｏ）４」ＣｌＯ４．Ｈ２Ｏ及２和３的晶体结构。     

乙二醇甲醚—水溶液作介质水热法合成四方相ZrO3.3%Y2O3纳米晶

利用新沉淀的Ｚｒ（ＯＨ）４．３％Ｙ（ＯＨ）３．ｎＨ２Ｏ作前驱体，以乙二醇甲醚－水溶液作反应介质，水热法合成了四方相ＺｒＯ２．３％Ｙ２Ｏ３纳米晶，考察了反应介质，ＰＨ值，反应温度及Ｃｌ＾１、ＮＯ＾３－和ＳＯ＾２－４对产物的影响。前驱体对产物物相有重要影响。     

稀土脯氨酸配合物[RE_2(L-Pro)_6(H_2O)_4](ClO_4)_6的标准生成焓测定

合成了两种稀土高氯酸盐与Ｌ－脯氨酸配合物的晶体．经热重、差热、化学分析及对比有关文献,知其组成 是［Ｐｒ２（Ｌ－Ｐｒｏ）６（Ｈ２Ｏ）４］（ＣｌＯ４）６和［Ｅｒ２（Ｌ－ＰｒＯ）６（Ｈ２Ｏ）４］（ＣｌＯ４）６,质量分数为９９．２４％和９８．２０％．选用ＲＥ（ＮＯ３）· ６Ｈ２Ｏ（ＲＥ＝Ｐｒ,Ｅｒ）、ＬＰｒｏ、ＮａＣｌＯ４·Ｈ２Ｏ和 ＮａＮＯ３作辅助物,使用具有恒温环境的反应热量计,以 ２ ｍｏｌ·Ｌ－１ＨＣｌ 作溶剂,分别测定了［２ＲＥ（ＮＯ３）３·６Ｈ２Ｏ＋６Ｌ－ＰｒＯ＋６ＮａＣｌＯ４·Ｈ２Ｏ］和｛ ［ＲＥ２（Ｌ－ＰｒＯ）６（Ｈ２Ｏ）４］（ＣｌＯ４）６＋６ＮａＮＯ３｝在 ２９８．１５ Ｋ时的溶解热．设计一热化学循环求得化学反应的反应焓ｒＨ分别是：６３．９０４ ｋＪ·ｍｏｌ－１和 ９１．０１７ ｋＪ·ｍｏｌ－１,经计算得配合物［ＲＥ２（Ｌ－Ｐｒｏ）６（Ｈ２Ｏ）４］（ＣｌＯ４）６（ｓ）在 ２９８．１５ Ｋ时的标准生成焓（２９８．１５ Ｋ）分别 是－６ ５９４．７８ ｋＪ·ｍｏｌ－１和－６ ５３２．８７ ｋＪ·ｍｏｌ－１。     

2-甲酯基丙基合锡(Ⅳ)配合物的固相合成

利用２－甲酯基丙基三氯化锡与六甲基磷酰三胺（Ｌ＾１）、苯甲醛缩邻氨基苯酚（ＨＬ＾２）及２－甲基－８－羟基喹啉（ＨＬ＾３）的低热固相反应合成了六个新的含２－甲酯基丙基的锡（Ⅳ）配合物ｎＣｌ３｛ＣＨ２ＣＨ（ＣＨ３）ＣＯ２ＣＨ３｝Ｌ＾１ｎ」（ｎ＝１,２）和「ＳｎＣｌ３－ｎ｛ＣＨ２ＣＨ（ＣＨ３）ＣＯ２ＣＨ３｝（民,２：Ｌ＝Ｌ＾２,Ｌ＾３）,通过元素分析、红外光谱、核磁共振对其进行了表征。用Ｘ－射线单晶衍射     

碘量法测定冶金物料中铁

系统地研究了Ｆｅ＾３＋与Ｉ＾－定量反应的条件，共存离子的干扰及消除方法，在ＨＣｌ和ＫＩ存在下，Ｆｅ＾３＋与Ｉ＾－定量反应，Ｃｕ＾２＋，ＡｓＯ４＾３－，ＶＯ２＾＋，等定量干扰，使用ＮａＦ或Ｈ３ＰＯ４制备参比液可抵消干扰。可不经分离直接测定大部分冶金物料中的高含量铁。     

不锈钢钝化膜在醛化液中自钝能力的研究

采用电偶极化和恒电位极化等电化学方法,评价１Ｃｒ１８Ｎｉ９Ｔｉ不锈钢阳极钝化膜和ＳＵＳ３６不锈钢原始钝化膜在７０℃的维尼维醛化液｛Ｈ２ＳＯ４（２４０ｇ／ｌ＋Ｎａ２ＳＯ４（７０ｇ／ｌ）＋ＨＣＨＯ（２５ｇ／ｌ）＋「Ｆｅ＾３＋」（３５．４＊１０＾－６）＋「Ｃｌ＾－」（２４０ｍｇ／ｌ）｝中的自钝能力,探讨醛化液组分、Ｆdisplay status     

α-Amino acid derived enaminones and their application in the synthesis of N-protected methyl 5-substituted-4-hydroxypyrrole-3-carboxylates and other heterocycles

A new and simple synthesis of novel N-protected methyl 5-substituted-4-hydroxypyrrole-3-carboxylates, which exist in equilibrium with their 4-oxo tautomers, has been developed in two steps starting from N-protected α-amino acids. The key intermediates are enaminones, which can also be isolated, characterized, and used for the construction of other functionalized heterocycles, before they spontaneously decompose to pyrrole products. 4-Hydroxypyrroles are prone to partial aerial oxidation but can be efficiently alkylated or reduced to stable polysubstituted pyrrolidine derivatives.     

Specific intramolecular aromatic CH insertion of diazosulfonamides

The chemoselectivity in the intramolecular CH insertion of various diazosulfonamides has been experimentally studied. The results reveal that the aliphatic 1,4-, 1,5-, or 1,6-C(sp³)?H insertions of diazosulfonamides are not accessible, while the aromatic 1,5-C(sp²)?H insertion can be realized specifically by adjusting the diazo-adjacent group. In addition, the general chemoselectivities in the intramolecular CH insertions of diazosulfonyl compounds are summarized. Generally, diazosulfones undergo both aromatic 1,5-C(sp²)?H and aliphatic 1,5- and 1,6-C(sp³)?H insertions, while diazosulfonates undergo aliphatic 1,5- and 1,6-C(sp³)?H insertions. However, diazosulfonamides only undergo aromatic 1,5-C(sp²)?H insertion.     

N-Heterocyclic carbene-palladacyclic complexes: synthesis,characterization and their applications in the C-N coupling and α-arylation of ketones using aryl chlorides

N-Heterocyclic carbene-palladacyclic complexes 3 were successfully achieved in a one-pot procedure under mild conditions. The structure of 3a was unambiguously confirmed by X-ray single crystal diffraction and it was an active catalyst in the Buchwald-Hartwig amination and α-arylation of ketones even at very low catalyst loadings (0.01?mol%).     

Iodine-mediated oxidative Pictet-Spengler reaction using terminal alkyne as the 2-oxoaldehyde surrogate for the synthesis of 1-aroyl-β-carbolines and fused-nitrogen heterocycles

An efficient iodine-mediated oxidative Pictet-Spengler reaction in dimethyl sulphoxide (DMSO) using terminal alkynes as the 2-oxoaldehyde surrogate for the synthesis of aryl (9H-pyrido[3,4-b]indol-1-yl)methanones is described. The scope of the protocol includes the total synthesis of Fascaplysin, Eudistomins Y₁ and Y₂. The methodology is extended for preparing pyrrolo[1,2-a]-quinoxaline and indolo[1,5-a]quinoxaline derivatives. The utility of 1-aroyl-β-carbolines was demonstrated by performing palladium-catalyzed β-carboline directed ortho-C(sp2)-H functionalization of the phenyl ring with thiomethyl (SMe) group using DMSO as source and for accessing 4-aryl-canthin-6-ones.     

Facile synthesis of bicyclic 1-arylpyrazol-5-ones

In this Letter, we described a facile method for constructing fused bicyclic 1-arylpyrazol-5-one ring system. We employed various methylene-containing carboxylic acids as the substrates and proved that the pyrazolone ring closure requires activated methylene group in intermediate II. Accordingly, a series of structurally diversified, fused bicyclic 1-arylpyrazol-5-ones was prepared in moderate to high yields using the requisite substrates.     

Synthesis of pyrrolo[1,2-a]pyrazines and pyrazino[1,2-a]indoles by Curtius reaction in Morita-Baylis-Hillman derivatives

Synthesis of substituted pyrrolo[1,2-a]pyrazines and pyrazino[1,2-a]indoles from the Morita-Baylis-Hillman derivatives of acrylates via saponification followed by Curtius reaction is described.     

正丁胺对激光染料荧光谱影响的研究

用正丁胺作为碳源,采用射频辉光放电制备碳膜,选用激光染料R6G和聚乙二醇混合液作为蒸气源,采用单源热蒸发,在蒸发室与染料同时沉积得到混合膜,用拉曼光谱和红外光谱分析了碳膜的结构和键合方式,分析表明:碳膜中存在胺基团和氢原子.混合膜的荧光谱测量结果表明,认为正丁胺对染料荧光谱的影响是因为胺基和氢原子的存在.     

Cu0-catalysed 1,3-dipolar cycloadditions of α-amino acid derived N,N-cyclic azomethine imines to ynones

A series of 20 CuAIAC reactions between eight 4-acylamino substituted pyrazolidine-3-one-1-azomethine imines and four terminal ynones were performed using Cu⁰ as catalyst. The corresponding fluorescent cycloadducts were obtained in very high yields upon simple workup. Thus, Cu-metal turned out to be a better catalyst than Cu^I in terms of yield and ease of isolation. Availability of azomethine imines, mild reaction conditions, and simple workup enable a “click” access to libraries of densely substituted 2,3-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-ones. Reactivity of differently substituted dipoles was evaluated experimentally and by quantum chemical methods (DFT).     

Synthesis and antioxidative/anti-inflammatory activity of novel fullerene–polyamine conjugates

(E)-4-(Fullerenopyrrolidin-1-yl)-3-methylbut-2-enoic acid and its corresponding succinimidyl ester, readily obtained through Prato-type modification of C₆₀, were used for the selective N-acylation of polyamines. The thus obtained conjugates were evaluated for their antioxidative and anti-inflammatory activity and their cytotoxicity was determined. Members of this family of compounds showed interesting anti-lipid peroxidation, anti-lipoxygenase and anti-inflammatory activity and comparable cytocompatibility to spermidine.