Studies on the Synthesis of the Sydnone Derivatives and its Properties III. Synthesis of Bissydnone

Two new bissydnones; 3,3′-diphenyl-4,4′-bissydnone (I) and di(3-sydnonyl)-biphenyl (II) have been synthesized by Ullmann Reaction and Palladium chloride condensation in yields of 10-70%.     

Carbon-13 NMR Studies of Some Sydnone Derivatives

The natural abundance carbon-13 nuclear magnetic resonance spectra of 3-arylsydnone, 3-aryl-4-formylsydnone, 4-acetyl-3-arylsydnone, 3-aryl-4-cyanosydnone as well as some derivatives of the above compounds have been studied. The data indicate that the electron withdrawing effect on the C₄ atom of the sydnone ring decreases in the sequence: C≡N>COCH₃～CHO. The solvent effect on the chemical shift has also been investigated.     

Studies on the Syntheses of Sydnone Derivatives and Their Properties: XVI. Syntheses of 4-Sydnonyl Tosylates by Anodic Tosylation

As the first synthesis of sydnone derivatives having a carbon-oxygen bond at the 4-position of sydnone ring, 4-sydnonyl tosylate were successfully prepared by anodic substitution reaction.     

三苯胺类小分子的合成及其AIE性能研究

以二苯胺、碘苯、对碘甲苯以及对碘苯甲醚为原料,合成了三苯胺及其衍生物T1~T5(4-甲氧基三苯胺、4-甲基三苯胺、4-醛基三苯胺、4-乙烯基三苯胺),并对其紫外-可见吸收光谱与荧光光谱进行了检测。结果表明,连有甲氧基、甲基、乙烯基取代基的三苯胺化合物在甲醇/氯仿混合溶液中具有聚集诱导发光(AIE)性能;而醛基取代的4-醛基三苯胺表现出了聚集荧光猝灭(ACQ)现象。     

胺烷基二茂铁衍生物的合成及其结构与性质的研究

选择不同的胺组分，利用改进的Ugi法合成了一系列含有胺烷基的二茂铁衍生物，并对其结构和性质进行了研究。     

Triorganotin(IV) Derivatives of Bidentate Schiff Bases: Synthesis and Spectral Studies

Abstract

Reaction of tri-n-butyl tin(IV) chloride with the sodium salt of Schiff bases [salicylidene-2-aminopyridine (sapH), salicylidene-2-amino-4-picoline (sapicH), salicylidene-2-methyl-1-aminobenzene (o-smabH), salicylidene-4-methyl-1-aminobenzene (p-smabH), salicylidene-1- aminobenzene (sabH), salicylidene-3-nitro-1-aminobenzene (snabH)] in MeOH-C₆H₆ mixture in 1:1 molar ratio produced complexes of the type [Buⁿ ₃Sn(sb)] (where sb = Schiff bases). All complexes obtained were characterized by elemental analysis (C, H, N, and Sn), infrared (IR), nuclear magnetic resonance (NMR; ¹H, ¹³C, and ¹¹⁹Sn), and TOF-MS spectroscopic studies. These complexes were found to be monomeric, colored viscous liquids and are soluble in polar solvents (methanol, ethanol, DMSO, and DMF). On the basis of ¹¹⁹Sn NMR observations, a five coordination geometry around tin(IV) atom in these complexes is proposed tentatively.     

丁酮内酯及其衍生物的合成与生物性能研究进展

丁酮内酯及其衍生物不仅是重要的合成结构单元,而且具有优良的生物及生理活性,该类化合物显示了广泛的应用和发展前景.综述了近年来含丁酮内酯结构单元化合物的研究进展,重点介绍了该类化合物的结构特征、生物性能及合成方法.     

Studies on the Preparation and Properties of Some Phenolic Derivatives of Tricyclopentadienyl Cerium (IV) and Bisindenyl Cerium (IV)

Reactions of tricyclopentadienyl cerium (IV) chloride (I) and bisindenyl cerium (TV) dichloride (II) with mono-, di-, and trihydroxy phenols have been studied and some phenoxide derivatives of (I) and (II) have been isolated. Infrared spectra and some physical characteristics of all these compounds are Reported.     

树枝形聚合物修饰双8-羟基喹啉衍生物的合成及稳态光物理性质研究

设计合成了1 3代芳醚骨架树枝形聚合物修饰的双8 羟基喹啉衍生物.对这些化合物在不同溶剂中的荧光光谱研究表明,随着代数的增加,目标树枝形聚合物的荧光量子产率增大,树枝形聚合物对核心发色团具有一定的隔离作用,并且目标分子内可以发生从骨架向核心发色团的能量传递.     

三嗪类化合物的合成及其产酸性能研究

合成了一系列的三嗪类光生酸剂1a—1e,确定了它们的结构,并对1e在乙腈溶剂中365和405nm光下的曝光分解产酸性能进行了初步的定量研究.结果表明,在测定浓度范围内分解量子产率和产酸量子产率基本上都不随浓度的变化而变化,在405nm光下比在365nm光下有更高的分解和产酸量子效率.有关这类化合物的光生酸性能与曝光波长的关系正在进一步研究中.     

聚并苯和取代聚并苯电子性质的量子化学研究

准一维聚并苯体系是一类典型的梯形结构有机导体材料．采用量子化学一维紧束缚自洽场晶体轨道ＣＮＤＯ／２　方法，研究了顺、反式聚并苯和取代聚并苯的结构、能量和电子布居．计算了甲基、甲氧基、氯和羟基取代聚并苯的电子能带，与聚并苯进行了分析比较．结果表明：（１）单取代使对称性明显降低，对聚并苯的能带结构影响较大，使能隙值普遍增大，导电性能降低．（２）双取代虽使电荷重新分布，但基本保持聚并苯自身结构特征．取代聚并苯与聚并苯比较能隙值变化不大．对于不同的取代基影响规律不同．对位双取代与间位双取代也表现出差异．（３）顺式和反式结构聚并苯的电子性质略有差异，取代后变化较大．     

Studies on Properties of p-Nitrophenylazo Calixarene Derivatives

Organiccompoundswithsecond ordernonlinearoptical(NLO)propertieshavevariouspotentialinthedevelopmentofmaterialsforapplicationssuchasfrequencydoublingandop ticalswitching .1,2 TraditionalorganicNLOmaterialsareor ganicmoleculesthatcontainelectron donatingandelectron acceptinggroupsconnectedviaaconjugatedπsystem ,i.e .,socalledD π Astructure .Generally ,thesecond ordernon linearhyperpolarizability βofamoleculeincreaseswithin creasinglengthoftheconjugatedπsystemandincreasingstrengthofthedono…     

Studies on the Photovoltaic Properties of Tetrabenzoporphyrin and Its Derivatives

The photovoltaic characteristic, of a series of tetrabenzoporphyrin dyes are described. By the aid of the principle of field effect, the influences of external electric field on photovoltaic properties were investigated.     

吖啶酮类衍生物的光电性质研究

测定了8个吖啶酮类衍生物的紫外吸收光谱、荧光光谱和荧光量子产率,以研究它们的结构与光学性质之间的关系,用循环伏安法测出它们各自的电子势．发现吖啶酮类衍生物都具有较高的电子亲和势,表现出比常用的电子传输材料2-(4-联苯基)-5-(叔丁苯基1—1,3,4-二唑(PBD)更容易被还原的优良电化学性能。     

二茂铁氮丙啶衍生物的合成与性质

由二茂铁羧酸酰氯和氮丙啶通过亲核取代反应,合成了二十四种新的二茂铁氮丙啶化合物,并做了元素分析和红外、核磁波谱的测定。     

Catechol-O-methyltransferase-Inhibiting Pyrocatechol Derivatives: Synthesis and Structure-Activity Studies

3-Nitro- and 3-cyanopyrocatechols bearing electron-withdrawing substituents at C(5) have been found to inhibit the enzyme catechol-O-methyltransferase. Structure-activity studies are discussed on the basis of the pharmocological data of 50 compounds (cf, Chapt. 4, Tables 1–7). Some 3-nitro-5-aroylpyrocatechols (Type A², Table 1) fulfil the requirements for a clinical candidate, being orally active, specific, reversible, and relatively short-acting. The chemical work involved is illustrated by describing a choice of exemplary syntheses, dealing with compounds 9, 11, 14, 18, 22, 24, 25, 35, 41 , and 42 (Chapt. 5, Schemes 1–10).     

苷类化合物研究 IV: 熊果苷类似物的合成

本文报道以1-溴-2,3,4,6-四-O-乙酰基-a-D-吡喃糖与苯二酚在氢氧化钠的丙酮-水溶液中反应, 生成熊果苷类似物. 由^1HNMR测定了糖苷的端基异构体.     

取代吡唑啉衍生物的合成与生物活性

采用α-三唑-β-烷氧基芳酮与肼关环,制备了1,3-二苯基-4-三唑基吡唑啉1a,1-苯基-3-对氯苯基-4-三唑基吡唑啉1b和3-取代苯基-4-三唑基吡唑啉(7),并研究了化合物7的成环优化条件.使用α,β-不饱和酮与肼关环合成了1,3,4,5-多取代吡唑啉衍生物1c-1h,并初步用质谱法确定了该反应产物的结构;同时,以3,5-二取代吡唑啉(6)和7作为中间体合成了1-,3-,4-或5-取代的化合物2a-2l.初步生物活性测定结果表明,所合成的化合物均有一定的杀菌、激素和除草效果.     

2位取代嘌呤衍生物的合成研究

对2-碘-9-苄基嘌呤与有机锡试剂RSnBu₃之间的Stille偶合反应以及2-乙烯基-9-苄基嘌呤中的乙烯基的亲核加成和环加成反应进行了研究,合成出了一系列新的2位取代的嘌呤衍生物.化合物的结构均经元素分析、¹HNMR、¹³CNMR和MS确证.提出2-乙烯基-9-苄基嘌呤与苯硫酚的反应机理为氧化加成而非亲核加成,采用单晶X射线衍射法对主要产物的结构进行了确认.