（R）－N－（γ－烃基－δ－酮己酰基）四氢噻唑－2－硫酮－4－羧酸乙酯的合成及其同（R，S）－α－苯乙胺的反应

γ－甲基－δ－酮己酸，γ－异丙基－δ－酮己酸在碘化Ｎ－甲基－２－氯吡啶盐存在下分别同（Ｒ）－四氢噻唑－２－硫酮－４－羧酸乙酯反应，得到光学活性的（Ｒ）－Ｎ－（γ－甲基－δ－酮己酰基）四氢噻唑－２－硫酮－４－羧酸乙酯（１ａ）及光学活性的（Ｒ）－Ｎ－（γ－异丙基－δ－酮己酰基）四氢噻唑－２－硫酮－４－羧酸乙酯（１ｂ）。１ａ，１ｂ分别同（Ｒ，Ｓ）－α－苯乙胺反应得到光学活性的酰胺２ａ，２ｂ，同时使（Ｒ，Ｓ）－α－苯乙胺拆分，得到光学活性的α－苯乙胺。     

（R）—N—（γ—烃基—δ—酮己酰基）四氢噻唑—2—硫酮—4—羧酸乙酯的合成及…

γ－甲基－δ酮己酸，γ－异丙基－δ－酮己酸在碘化Ｎ－甲基－２－氯吡啶盐存在下分别用（Ｒ）－四氢噻唑－２－硫酮－４－羧酸乙酯反应，得到光学活性的（Ｒ）－Ｎ－（γ－甲基－δ－酮己酰基）四氢噻唑－２硫酮－４羧酸乙酯（ｌａ）及光学活性的（Ｒ）－Ｎ－（γ－异丙基－δ－酮己酰基）四氢噻唑－２－硫酮－４－羧酸乙酯（１ｂ），ｌａ，ｌｂ分别同（Ｒ，Ｓ）－α－苯乙胺反应得到光学活性的酰胺２ａ，２ｂ，同时使（Ｒ，Ｓ）＝     

N－（2－环戊酮基丙酰基）－及N－（2－环己酮基丙酰基）－四氢噻唑－2－硫酮的合成及其醇解与胺解

以碘化－Ｎ－甲基－２－氯吡啶盐为缩合剂，在三乙胺存在下由３－（２－环戊酮基）丙酸及３－（２－环己酮基）丙酸分别同四氢噻唑－２－硫酮反应，得到新化合物Ｎ－（２－环戊酮基内酰基）四氢噻唑－２－硫酮（２ａ）及Ｎ－（２－环己酮基丙酰基）四氢噻唑－２－硫酮（２ｂ），产率分别为５２．９％和５１．０％，２ａ，ｂ分别同甲醇、乙醇反应得到相应的３－（２－环戊酮基）丙酸酯３ａ，ｂ及３－（２－环己酮基）丙酸酯３ｃ，ｄ，３ａ～ｄ的产率为７５～８７％；２ａ、ｂ分别同胺反应得到３－（２－环戊酮基）内酰胺４ａ、ｂ及３－（２－环己酮基）内酰胺４ｃ、ｄ，４ａ～ｄ产率为７８～９３％。     

两个环己烷螺含氮杂环化合物的合成和晶体结构

环己酮与硫代碳酰肼在不同介质中的反应，合成出两个不同的环己烷螺含氮杂环化合物。经Ｘ－射线结构分析确定它们分别为１，２，４，５－四氮螺［５，５］十一烷－３－硫酮，Ｃ＿７Ｈ＿（１４）Ｎ＿４Ｓ（Ⅰ）和１，２，４，－三氮螺［４，５］癸－１－烯－４－氨基－３－硫酮。Ｃ＿７Ｈ＿（１２）Ｎ＿４Ｓ＿ｘ（Ｓ＿ｘ＝０．８Ｓ＋０．２Ｏ）（Ⅱ）。晶体学参数分别为（Ⅰ）：Ｐ２＿１／ｃ，ａ＝１２．０２６（４），ｂ＝２６．８１７（６），ｃ＝１２．０４２（３），β＝１１５．９４（２）°，Ｚ＝４，Ｖ＝９３３．４（１０），Ｍ＿ｒ＝１８６．２８；（Ⅱ）：Ｐ２＿１／ｍ，ａ＝６．５９５（７），ｂ＝６．８１７（６），ｃ＝１０．５７２（６），β＝１０６．３（１）°，Ｖ＝４５６（１），Ｚ＝２，Ｍ＿ｒ＝１８１．０５。最终一致因子分别为Ｒ＝０．０５４，Ｒ＿ｗ＝０．０６５和Ｒ＝０．０８９，Ｒ＿ｗ＝０．０９６。两个化合物中，环己烷都为椅式构型，它与其螺联的６员氮杂环，５员氮杂环的最小二乘平面间的夹角分别为６８．９４和９０°。并对合成反应途径作了初步讨论。     

3—吡唑基—6—取代均三唑并[3,4—6]—1,3,4—噻二唑的合成及生物活性

以１－甲基－３－乙基（４－氯）－５－哟唑甲作原料，经两步得到４－氨基－３－（１－甲基－３－乙基（４－氯）－５－吡唑基）－１，２，４－三唑－５－硫酮（３），３再与取代酸反应，得到一系列３（１－甲基－３－，乙基（－４－氯）－５－吡唑基）－６－取代均三并「３，４－ｂ」－１，３，４－噻二唑（４，５，６），元素分析、ＨＮＭＲ、ＩＲ和ＭＳ确定了它们的结构，初步生侧结果表明，３具有植物生长调节活性，４ｂ、４ｄ、     

3-吡唑基-6-取代均三唑并[3,4-b]-1,3,4-噻二唑的合成及生物活性

以１－甲基－３－乙基（－４－氯）－５－吡唑甲酰肼作原料，经两步得到４－氨基－３－（１－甲基－３－乙基（－４－氯）－５－吡唑基）－１，２，４－三唑－５－硫酮（３），３再与取代羧酸反应，得到一系列３－（１－甲基－３－乙基（－４－氯）－５－吡唑基）－６－取代均三唑并［３，４－ｂ］－１，３，４－噻二唑（４、５、６）．元素分析、１ＨＮＭＲ、ＩＲ和ＭＳ确定了它们的结构．初步生测结果表明：３具有植物生长调节活性，４ｂ、４ｄ、６具有杀菌活性．     

螺噻唑并咪唑类化合物的合成

由螺［５．５］十一烷－３－酮与硫脲在碘的存在下反应，生成了４，５－二氢螺［苯并［ｄ］噻唑－６－（７Ｈ），１′－环己烷］－２－胺（３），３与溴甲基苯基甲酮在苯中缩合得到相应的酮４ａ～４ｃ，然后在醇中加热环化生成二氢螺［咪唑并［２，１－ｂ］苯并［ｄ］噻唑］化合物５ａ～５ｃ。新化合物５ａ～５ｃ的分子组成及结构经元素分析、１ＨＮＭＲ、１３ＣＮＭＲ证实，其中产物５ｂ的分子结构经Ｘ－射线衍射晶体分析确认。     

三环己基锡O,O‘—二（4—氯苯基）—二硫代磷酯酯和二丁基锡双（O,O’—二…

三环己基锡Ｏ，Ｏ’－二（４－氯苯基）二硫代磷酸酯（Ｉ），Ｃ３０Ｈ４１Ｃｌ２（Ｏ２ＰＳ２Ｓｎ，Ｍｒ＝７１８．３６，单斜晶系，Ｐ２１／ｎ，ａ＝１６．１５１（２），ｂ＝９．４１５９（１），ｃ＝２２．９８７（３），Ａ，β＝１０５．６９（１）°，Ｚ＝４，Ｄｃ＝１．４１８ｇ．ｃｍ＾－３，Ｒ＝０．０６３；二丁基锡双（Ｏ，Ｏ’－二（４－甲基苯基）二硫代磷酯酯（Ⅱ），Ｃ３６Ｈ４６Ｏ４Ｐ２Ｓ４Ｓｎ，Ｍｒ＝８５１．６６     

7β-杂环酰胺基-3-杂环硫亚甲基头孢菌素衍生物的半合成及抗菌活性研究

通过２－取代１,３,４－恶二唑－５－硫醇１ａ－１ｆ和头孢菌素母体７－ＡＣＡ反应,制得头孢菌素中间体２ａ－２ｆ,用氨噻唑肟活性酯３和１－芳基－１Ｈ－１,２,３－三唑－４－甲酰氯４ａ－４ｅ分别和头孢菌素中间体缩合制得头孢菌素新衍生物５ａ－５ｂ和６ａ－６ｈ,新化合物的结构经＾１Ｈ ＮＭＲ,ＩＲ及ＭＳ确认,初步体外抗菌结果表明,头孢菌素５ａ－５ｂ对革兰氏阳性和阴性菌有显著抑制活性,而６ａ－６ｈ对其则显示出中等程度的抑制活性。     

α—羰基烯酮环二硫代缩醛化学：XXI：β,β—1,3—亚丙二硫基—α,β—不饱和酮？

在乙醇为溶剂，乙醇钠为碱的条件下，标题类化合物１ａ～ｃ，３ａ，４ａ与胍缩合反应生成相应的嘧啶类化合物２ａ～ｃ，３ｂ，３ｃ，４ｂ。在以ＤＭＦ为溶剂，乙醇钠为碱的条件下，化合物１ａ与胍反应可生成２－氨基－４－二甲氨基－６－苯基嘧啶２ａ，该缩反应的特点为标题类化合物与胍缩合生成嘧啶类化合物的同时，将乙氧基或二甲氨基引入嘧啶环的确定位置，２ａ，２ａ，３ｂ，３ｃ，４ｂ为新的嘧啶在化合物。     

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%.     

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.     

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.     

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.     

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.