三元混配化合物[Cu(8-Q)_2(phen)]·H_2O及[Cu(NCS)_2(phen)_2]·H_2O的固相合成

用室温固相反应合成了［Ｃｕ（８－Ｑ）２（ｐｈｅｎ）］·Ｈ２Ｏ 及［Ｃｕ（ＮＣＳ）２（ｐｈｅｎ）２］·Ｈ２Ｏ 两个三元混配化合物。室温下［Ｃｕ（Ａｃ）２（Ｈ２Ｏ）］与邻菲?啉固体几乎不发生反应，但加入第二配体８－羟基喹啉及ＫＳＣＮ，反应几乎立即发生。ＸＲＤ、ＩＲ谱及元素分析结果表明：第二配体的加入并不仅仅促进［Ｃｕ（Ａｃ）２（Ｈ２Ｏ）］与第一配体的反应，它同时也参与反应，形成了三元混配化合物。用室温固相反应合成上述两个三元混配化合物尚未见报道     

二硫代草酰胺基或二环己酮草酰二腙作桥联基的新型双核Cu（Ⅱ）－Cu（Ⅱ）配合物的合成和磁性（Ⅱ）

合成和表征了四种新的以二硫代草酰胺基（ｄｔＯ２－）或二环己酮草酰二腙（ＢＣＯ）作桥基的双核金属配合物［Ｃｕ２（ｐｈｅｎ）２（ｄｔＯ）］（ＣｌＯ４）２（１）、［Ｃｕ２（ｄｉｅｎ）２（ｄｔＯ）］（ＣｌＯ４）２·２Ｈ２Ｏ（２）、［Ｎｉ２（ｄｉｅｎ）２（Ｈ２Ｏ）２（ｄｔＯ）］（ＣｌＯ４）２（３）及［Ｃｕ２（ｐｈｅｎ）２（ＣｌＯ４）２（ＢＣＯ）］（ＣｌＯ４）２（４），（ｐｈｅｎ：１，１０－邻菲咯啉，ｄｉｅｎ：二乙烯三胺）。测定了配合物１和４的变温磁化率，并求出交换积分Ｊ分别为－７．６７（１）和－０．９２（４）ｃｍ－１，表明双核配合物中铜离子间存在反铁磁性自旋交换相互作用。     

2—溴代对苯二甲酸根桥联双核钴（Ⅱ）配合笺的合成,磁性及抗癌活性

合成了三种以２－溴代对苯二甲酸为桥联配体的新型双核钴（Ⅱ）的配合物，即［Ｃｏ２（ＢＴＰ）（ｐｈｅｎ）４］（ＣｌＯ４）２．Ｈ２Ｏ（配合物１）、［Ｃｏ２（ＢＴＰ）（Ｎｐｈｅｎ）４］（ＣｌＯ４）２．２Ｈ２Ｏ（配合物２）和［Ｃｏ２（ＢＴＰ）（Ｂｐｙ）４］ＣｌＯ４）２，２ＨＯ（配合物３）（ＢＴＰ＝２－溴代对苯二甲酸根，ｐｈｅｎ＝１，１０－菲罗啉，Ｎｐｈｅｎ＝５－硝基－１，１０－菲罗啉，Ｂｐｙ－２，２＇联吡啶     

高碲酸合铜（Ⅱ,Ⅲ）配合物的合成和性质

在Ｈ６ＴｅＯ６／ＫＯＨ水溶液中以臭氧为氧化剂，将二价铜化合物氧化成三价铜化合物，并获得一个新的三价铜化合物Ｂａ４Ｋ［Ｃｕ（Ｈ２ＴｅＯ６）２］（ＯＨ）４．６Ｈ２Ｏ；描述了碱性溶液中“Ｃｕ（Ⅲ）／Ｃｕ（Ⅲ）”循环伏安图。对铜（Ⅲ）化合物，Ｎａ４Ｈ［Ｈ２ＴｅＯ６）２］．１７Ｈ２Ｏ以及相应的铜（Ⅱ）配合物的电子光谱和Ｃｕ２ｐＸＰＳ进行了研究，给出了其配位场场强参数和Ｃｕ２ＰＸＰＸ的电子结合能。由于价态升高     

Cu（Ⅱ）—Ln（Ⅲ）双核配合物的合成,磁性和抗菌活性

合成和表征了６种以草酰胺为桥联的异双核配合物Ｃｕ（ｏｘｅｎ）Ｌｎ（ｐｈｅｎ）２（ＣｌＯ４）３（ｏｘｅｎ代表Ｎ，Ｎ－双（２－氨乙基）草酰胺根阴离子；ｐｈｅｎ为１，１０－邻菲咯啉；Ｌｎ表示Ｙ，Ｌａ，Ｃｅ，Ｎｄ，Ｇｄ和Ｙｂ）测定了Ｃｕ（ｏｘｅｎ）Ｇｄ（ｐｈｅｎ）２（ＣｌＯ４）３．Ｈ２Ｏ的变温磁化率（４－３００Ｋ），并用最小二乘法和从自旋Ｈａｍｉｌｔｏｎｉａｎ算符Ｈ＝－２ＪＳ１。Ｓ２导出的磁方程拟合，求得     

邻菲罗啉-氨基酸铜(Ⅱ)配合物的合成及表征

合成了三种邻菲罗啉（Ｐｈｅｎ）－氨基酸酮（Ⅱ）的配合物：［Ｃｕ（Ｐｈｅｎ）（Ｌ－Ｈｉｓ）］·２ＣｌＯ４·Ｈ２Ｏ,［Ｃｕ（Ｐｈｅｎ）（Ｇｌｙ）］·ＣｌＯ４·Ｈ２Ｏ和［Ｃｕ（Ｐｈｅｎ）（Ｌ－Ｐｒｏ）］·ＣｌＯ４·０．５Ｃ２Ｈ５ＯＨ（Ｌ－Ｈｉｓ：组氨酸;Ｇｌｙ：甘氨酸：Ｌ－Ｐｒｏ：脯氨酸）。用元素分析、摩尔电导、ＩＲ和电子吸收光谱等手段对配合物进行了表征     

镧系邻菲罗啉四元混合阴离子配合物的合成和晶体结构

从水／乙醇溶剂和酸性溶液中合成一系列包含ｐｈｅｎ（ｐｈｅｎ：邻菲罗啉）的镧系四元混合阴离子配合物。采用元素分析、红外光谱、紫外光谱、热分析和单晶Ｘ射线衍射对其组成和结构进行了表征。结果表明，［Ｃｅ（ＣＨ３ＣＯＯ）２（ＮＯ３）（ｐｈｅｎ）２］属单斜晶系，空间群Ｃ２／ｍ，ａ＝１５４４４（６）ｎｍ，ｂ＝１２２７３（５）ｎｍ，ｃ＝１２７７６（５）ｎｍ，β＝１３１８９（２）°，Ｖ＝１８０２（１）ｎｍ３，Ｚ＝２，Ｒ＝００２４，Ｒｗ＝００３２。     

μ—4,4‘—联吡啶桥联三核Cu（Ⅱ）配合物的合成和磁性

合成了３种以４，４’－联吡啶为配体的三核环状Ｃｕ（Ⅱ）配合物［Ｃｕ３（４，４＇－ｂｐｙ）３．（ｐｈｅｎ）３］（ＣｌＯ４）６．２Ｈ２Ｏ（１），［Ｃｕ３（４，４＇－ｂｐｙ），（ｂｐｙ）３］（ＣｌＯ４）６．Ｈ２Ｏ（２）和［Ｃｕ３９４，４＇－ｂｐｙ）３．（ＮＯ２－ｐｈｅｎ）３］（ＣｌＯ４）６．６Ｈ２Ｏ（３）。经元素分析，电导，ＩＲ，电子光谱，ＥＳＲ，磁化率等方法进行了表征，推定该配合物具有以４，４’－联吡     

铜(Ⅱ)-苯甲酰苯丙氨酸-邻菲罗啉混配配合物的合成、晶体结构及性质研究

Ｎ－苯甲酰苯丙氨酸（ＢｐｈｅＯ）与Ｃｕ（ｐｈｅｎ）Ｃｌ２发生取代反应，生成了铜配合扬［Ｃｕ（ＢｐｈｅＯ）２（ｐｈｅｎ）］·Ｈ２Ｏ。晶体属单斜晶系，Ｃ２／Ｃ空间群。晶胞参数为：ａ＝５．３３０（１），ｂ＝２４．５０２（２），ｃ＝２８．８３９（２），β＝９１．９５（１）°，Ｖ＝３７６４．１（８）３，Ｚ＝４，Ｆ（０００）＝１６６０，Ｄｃ＝１．４０９ｇ／ｃｍ３，μ＝０．６３９ｍｍ－１。Ｃｕ与２个ＢｐｈｅＯ配体的羧基Ｏ原子及ｐｈｅｎ分子的２个Ｎ原子形成４配位的平面四边形结构。经元素分析，ＩＲ、ＥＳＲ、ＵＶ、ＴＧ－ＤＴＡ及磁性测定，对配合物的性质进行了研究。     

α,β—不饱和酸铜与1,10—邻菲绕啉三元配合物的合成,表征…

合成了丙烯酸铜和α－甲基丙烯酸铜与１，１０－邻菲绕啉形成的三元配合物，通过元素分析，红外光谱，热谱等数据对配合物进行了表征，测定了Ｃｕ（Ｃ４Ｈ５Ｏ２）２（ｐｈｅｎ）．Ｈ２Ｏ的晶体结构，配合物的组成为ＣｕＬ２（ｐｈｅｎ）．Ｈ２Ｏ（Ｌ＝ＣＨ２＝ＣＨ－ＣＯＯ＾－，ＣＨ２＝Ｃ（ＣＨ３）－ＣＯＯ＾－），结构为畸变的四方锥形，属单斜晶系，Ｐ２１／ｎ群，晶胞参数：ａ＝０．７３２２ｎｍ，ｂ＝１．７９４８ｎｍ，ｃ＝     

二氧化碳和丙烯直接合成甲基丙烯酸的NiPMo/TiO2催化剂的研究

用溶胶-凝胶法以磷钼酸(MPA)的镍盐溶液水解钛酸四丁酯制备了NiPMo/TiO2催化剂.使用ICP、 XRD、 TG-DTA、 IR、 TPD-MS和微反应技术研究了催化剂的化学组成、热稳定性、化学吸附性质和催化反应性能.杂多钼酸盐与TiO2通过O2-在TiO2表面发生了键合.在623 K下,杂多阴离子仍保持原有的Keggin结构.CO2在Lewis酸位Ni(Ⅱ)和Lewis碱位Ni-O-Mo的桥氧协同作用下生成CO2卧式吸附态Ni(Ⅱ)←O-(CO)←(O--Ni).丙烯有多种吸附态在催化剂上吸附.在563 K、 1 MPa和空速1500 h-1的反应条件下,丙烯的摩尔转化率为3.2%,产物MAA选择性为95%.     

Synthesis of 1-benzyloxypyrazin-2(1H)-one derivatives

Different approaches for the synthesis of 1-benzyloxypyrazin-2(1H)-one derivatives from simple amino acids have been investigated. A library of 33 precursors for the preparation of N-hydroxy pyrazinones was obtained in moderate to good yields.     

Toward new camptothecins. Part 6: Synthesis of crucial ketones and their use in Friedländer reaction

In the context of the preparation of camptothecin and luotonin A analogs, the synthesis of some key keto-precursors and their use in Friedländer condensation are described. This paper also focuses on the stability of these keto intermediates and emphasizes the major differences between indolizinones and pyrroloquinazolinones series. Noteworthy is also the report of some original structures isolated as by-products of some experiments.     

CoFe2O4自形成磁性液体场致结构化对磁化的影响

The Langevin paramagnetic theory can’t describe the relation between magnetization of ferrofluids and applied magnetic field. The structuralization of ferrofluids, which is considered the main influence factor of the magnetization, is regarded. The part of magnetization works is deposited when the structure is forming. This action influences the magnetization of ferrofluids directly or indirectly. On the base of the “compressing” model, the Langevin function that usually describes the magnetization of ferrofluid is modified, and a well-fitted curve is obtained. An equation of the relation between the equivalent volume fraction after being “compressed” and the intensity of magnetic field is discovered, which approximately describes the process of magnetization. The relation between the approximate initial susceptibility and the volume fraction can be obtained from modified formula.     

Highly regioselective Buchwald–Hartwig amination at C-2 of 2,4-dichloropyridine enabling a novel approach to 2,4-bisanilinopyridine (BAPyd) libraries

The highly regioselective Buchwald–Hartwig amination at C-2 of the cheap and readily accessible reagent, 2,4-dichloropyridine with a range of anilines and heterocyclic amines is described. This new methodology is robust and provides a facile access to 4-chloro-N-phenylpyridin-2-amines on 0.25 mol scale. These intermediates undergo a further Buchwald–Hartwig amination at higher temperature to enable rapid exploration of the chemical space at C-4 and to provide a library of 2,4-bisaminopyridines.     

KMnO4-mediated oxidative CN bond cleavage of tertiary amines: Synthesis of amides and sulfonamides

KMnO₄-mediated oxidative CN bond cleavage of tertiary amines producing secondary amine was introduced, which was trapped by electrophiles (acyl chloride and sulfonyl chloride) to form amides and sulfonamides. The reaction could take place at mild condition, tolerating a wide range of function groups and affording products in moderate to excellent yields.     

Chemistry of heterocyclic compounds at the A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, over 50 years (Review)

The review contains a concise historical account and information on the most significant researches undertaken by the staff at the A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences on the Chemistry of Heterocyclic Compounds. Dedicated to Academician of the Russian Academy of Sciences B. A. Trofimov on his 70th jubilee. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1443–1502, October, 2008.     

A general and convenient synthesis of 4-(tosylmethyl)semicarbazones and their use in amidoalkylation of hydrogen,heteroatom, and carbon nucleophiles

A general synthesis of previously unknown semicarbazone-based α-amidoalkylating reagents, 4-(tosylmethyl)semicarbazones, has been developed. The synthesis involved three-component condensation of semicarbazones of aliphatic or aromatic aldehydes with the same or other aldehydes and p-toluenesulfinic acid. The scope and limitations of this reaction were investigated. The compounds obtained were demonstrated to be an efficient α-(4-semicarbazono)alkylating agents. They were reacted with H- (sodium borohydride), O- (sodium methylate), S- (sodium phenylthiolate), N- (pyrrolidine, sodium succinimide), P- (trialkyl phosphites), and C-nucleophiles (sodium diethyl malonate) to give the corresponding products of the tosyl group substitution, 4-substituted semicarbazones, including analogues of nitrofurazone. Among the prepared compounds tested in vitro for antibacterial and antifungal activity, three nitrofuryl-containing semicarbazones exhibited high biological activities with minimum inhibitory concentration (MIC) values of 8–32 μg/mL.     

Sulfur-directed metal-free and regiospecific methyl C(sp3)–H imidation of thioanisoles

Regiospecific and direct imidation of the methyl C(sp³)–H bond of thioanisoles is realized under mild and metal-free conditions with N-fluorobis(benzenesulfonyl)imide as an oxidant and nitrogen source. Proposed mechanism suggests that thionium ion intermediates and a Pummerer-type reaction are involved. The imidation has advantages such as high step-economy, excellent functionality tolerance, and regiospecificity, giving structurally diverse imidation products.     

Synthesis of novel chiral bidentate hydroxyalkyl-N-heterocyclic carbene ligands and their application in palladium-catalyzed Mizoroki–Heck couplings and asymmetric addition of diethylzinc to benzaldehyde

A small library of new chiral bidentate hydroxyalkyl-imidazolium salts 1 is conveniently synthesized on multi-gram scale from inexpensive and commercially available chiral pool amino acids. The corresponding carbenes, generated by deprotonation of imidazolium salts 1, in combination with palladium(II) chloride were tested in the Mizoroki–Heck coupling reaction. The most significant results in terms of yields and reactivities were achieved with low catalyst loading. The catalytic activities of these imidazolium salts were also investigated in the asymmetric addition of diethylzinc to benzaldehyde. The use of MgO nanoparticles as an additive in conjunction with these ligands played a crucial role in increasing the efficiency of these reactions.