β—烷氧羰基乙基—氯化锡含氮氧配体配合物的合成及抗菌活性

以β－烷氧羰基乙基二氯化锡与８－羟基喹啉、水杨醛缩邻氨基苯酚反应合成了１２种未见文献报道的含氮氧配键化合物，利用元素分析、ＵＶ、ＩＲ和＾１ＨＮＭＲ对它们进行了表征，初步生物活性测试表明，某些化合物具有较高的杀菌活性。     

三羰基（三苯基膦）（α—萘乙酰基）钴的合成及表征

合成了三羰基（三苯基膦）（α－萘乙酰基）钴，用＾１３ＣＮＭＡ＾１ＨＮＭＲ，ＩＲ和元素分析等方法表征了该化合物的结构，并对其性质进行了研究。     

6—硫杂—13—氮杂二环（9.3.0）—3,8—二炔十四烷的合成及核磁共振鉴定

以３，４－二（４′－甲磺酰氧－２′－丁炔基）四氢呋喃或６－硫杂－３，８－二炔－１，１１－二羟甲基环十一烷为原料合成了二环化合物６－硫杂－１３－氧杂二环（９．３．０）－３，８－二炔十四烷，通过＾１ＨＮＭＲ＾１３ＣＮＭＲ，ＩＲ及ＭＳ进行结构鉴定。     

具有生物活性的有机硅化合物的研究（XIII）—1—（O,O—二烷基…

合成了９种１－（Ｏ，Ｏ－二烷基－二硫代磷酸酯）亚甲基－２，８，９－三氧杂－５－氮杂－１－硅杂三环－［３，３，３，０＾１，５］十一烷。合成方法简单，易于后处理，经元素分析、ＩＲ、＾１Ｈ ＮＭＲ、ＭＳ确定了新化合物的结构，并对其进行了生物活性的研究。     

用核磁共振表征对硝基偶氮苯衍生物

用一维＾１ＨＮＭＲ，＾１３ＣＮＭＲ方法研究了对硝基偶氮苯衍生物的结构，并通过二维＾１Ｈ－＾１Ｈ同核相关、＾１３Ｃ－＾１Ｈ异核相关及＾１３－＾１Ｈ异核远程相关谱进一步地确定了该衍生物的＾１Ｈ谱和＾１３Ｃ谱中各谱峰的归属。     

1—酰氧（胺）—2,8,9—三氧杂—5—氮杂—1—锡杂三环（3.3.3.0^1. …

合成了１４个新化合物，１－酰氧（胺）基－２，８，９－三氧杂－５－氮杂－１－锡杂三环（３．３．３．０＾１．５）十一烷，由ＩＲ，＾１ＨＮＭＲ，＾１３ＣＮＭＲ和＾１１９ＳｎＮＭＲ及元素分析确定其结构，该类化合物在ＣＤＣｌ３中可能形成六配位化合物，而在ＤＭＳＯ中，溶剂分子参与Ｓｎ原子配位，聚合体解聚为六配位化合物。     

三苯基锡N—亚水杨基氨基酸酯的合成及表征

合成了７种三苯基锡Ｎ－亚水杨基氨基酸酯，通过元素分析、ＩＲ、ＵＶ、＾１Ｈ ＮＭＲ和＾１３Ｃ ＮＭＲ测定，对其结构进行了表征。结果表明，合成的化合物具有醇亚胺和酮胺互变异构体结构，锡原子是五配位的，存在着分子间酚羟基（酮羰基）氧原子同锡原子的配键。测定了具有光学活性化合物的比旋光度。     

η6-苯乙烯二羰基(三苯基膦)铬配合物的合成与聚合

以η＾６－苯乙烯三羰基铬为原料,通过多步配体取代反应,合成了金属有机单体η＾６－苯乙烯二羰基（三苯基膦）铬配合物,经元素分析,ＩＲ和＾１Ｈ－ＮＭＲ进行了结构分析。研究了它在自由基引发下的聚合反应,结果表明强电子给体三苯基膦取代羰基配体可以改善配合物的聚合活性。     

对甲氧在偶氮苯衍生物的核磁共振表征

用一维＾Ｈ ＮＭＲ、＾１３Ｃ ＮＭＲ方法研究了对甲氧基偶氮苯衍生物的结构,并通过二维＾１Ｈ－＾１Ｈ同核相关谱（ＣＯＳＹ）、＾１３Ｃ－＾１Ｈ异核相关谱（ＨＥＴＣＯＲ）及＾１３Ｃ－＾１Ｈ异核远程相关谱进一步地确定了该类衍生物的＾１Ｈ和＾１３Ｃ谱中各谱峰的归属,为研究侧链液晶聚合物结构提供了有价值的数据。     

含钛MCM—41分子筛的合成与表征

水热法合成了含钛的ＭＣＭ－４１型超大孔分子筛，通过ＸＲＤ，ＩＲ，ＤＲＳＵＶ－ＶＩＳ，＾２９ＳｉＭＡＳＮＭＲ等测试，表明钛处在分子筛骨架上，同时考察了Ｎａ＾＋、Ａｌ＾３＋对ＴｉＭＣＭ－４１合成的影响以及分子筛的热稳定性、吸附量和催化活性。     

Symmetry groups for unit cells in solids

Two types of symmetry groups are commonly used in chemistry. Point groups are used for molecules, whereas, for solids, the 230 space groups are used. Neither of these types of symmetry groups are suitable for representing unit cells in solids, the symmetry of which is intermediate between that of point groups and space groups. To represent the symmetry of unit cells in an infinite lattice, a third type of symmetry group must be used. An algorithmic method of generating these symmetry groups is described. It can be demonstrated that these groups are valid by use of conventional symmetry group theory. This technique has been applied to the two-dimensional graphite lattice. Because the new method generates symmetry tables using only the topology of the system, the symmetry properties of graphs can also readily be derived. Last, the relationship between these groups and the other two types of groups is identified. © 1998 John Wiley & Sons, Inc. J Comput Chem 19: 168–180, 1998     

抗胆碱能药物设计合成的研究进展

综述了近年来抗胆碱能药物设计合成在阻断基团设计、连接基团设计、阳离子头设计方面的研究进展,     

Use of Silicon Substituents in the Syntheses of Natural and Non-natural Molecules

Trimethylsilyl groups have been used in our research as a director as well as a bulky and lipophilic group in our quest for natural and non-natural molecules.     

The use of 2-O-propagyloxycarbonyl protecting group in the selective formation of 1,2-trans-glycosidic linkage

The effect of N-phenylcarbamoyl (Car) and propagyloxycarbonyl (Poc) protecting groups at the O-2 position of donors was examined. The usefulness of Poc group in the selective formation of 1,2-trans-glycosidic linkage is shown by comparing the reactivity of donors having Car or acyl (Bz) groups.     

SYNTHESIS AND CHARACTERIZATION OF COMB-LIKE POLYMERS BEARING HETEROCYCLIC AZO GROUP AND MESOGENIC GROUP

The synthesis and characterization of a series of novel comb-like polymethacrylates bearingheterocyclic azo group and mesogenic group are described. The thermal properties of the polymers such asthermal stability and phase transition behavior were investigated by thermogravimetric analysis, differentialthermal analysis and polarizing optical microscopy techniques. The experimental results show that all thesynthesized polymers do not exhibit liquid crystallinity except the homopolymer of the mesogenic monomerMAPB2 and the glass transition temperatures of the polymers increase with increasing content of azo moietyin polymers linearly.     

邻基参与与水解反应

描述了邻基参与的各种水解反应。     

A flexible correlation group table (CGT) method for the relativistic configuration interaction wavefunctions

A generalized correlation group table (CGT) method is described for the relativistic configuration interaction (RCI) wavefunctions of molecules containing heavy atoms. In this method first four keywords are defined and two properties are discussed in terms of spectroscopic states and double group theory. These definitions and properties are then used to summarize six principles to stipulate the relationship among relativistic states, nonrelativistic states, as well as RCI configurations. The definitions, properties, and principles comprise the generalized CGT method, which facilitates the classification and assignment of the RCI wavefunctions, and thus, provide a general technique for complex systems containing several open shells. Finally, the techniques are exemplified with a few computational models.     

A Vicinal Acyloxy Group Participation SN2 Reaction of Thiol Nucleophiles in the Formation of Thioacetals

Thioacetalization of acyl protected furanosides led to products with an ethanethiol group at C‐2 and 3‐O‐acetyl‐ 1,2‐di‐O‐isopropylidene‐D‐furanoses were converted into corresponding thioacetals with two ethanethiol groups at both C‐2 and C‐3 positions under the standard thioacetalization conditions. All products were characterized by ¹H NMR, ¹³C NMR and HRMS data. X‐ray structure analysis indicates that the vicinal acyloxy group is stereoselectively substituted by ethanethiols. The supposed mechanisms for these two kinds of transformations were presented.     

邻基参与与环化反应

本文总结了邻基参与的各类环化反应。     

Synthesis and photoinduced deprotection of calixarene derivatives containing certain protective groups

Calixarene derivatives 1a , 1b , and 1c containing pendant tert‐butoxycarbonyl (t‐BOC) groups were synthesized in 81, 93, and 83% yields, respectively, by the reaction of C‐methylcalix[4]resorcinarene (CRA), p‐methylcalix[6]arene (MCA), and p‐tert‐butylcalix[8]arene (BCA) with di‐tert‐butyl dicarbonate using triethylamine as a base in pyridine. Calixarene derivatives 2a , 2b , and 2c containing pendant trimethylsilyl ether (TMSE) groups were obtained in 58, 50, and 82% yields, respectively, by the reaction of CRA, MCA, and BCA with 1,1,1,3,3,3‐hexamethyldisilazane using chlorotrimethylsilane as an accelerator in tetrahydrofuran. Calixarene derivatives 3a , 3b , and 3c containing pendant cyclohexenyl ether (CHE) groups were also prepared in 65, 78, and 84% yields, respectively, by the reaction of CRA, MCA, and BCA with 3‐bromocyclohexene using potassium hydroxide as a base as well as tetrabutylammonium bromide as a phase‐transfer catalyst in N‐methyl‐2‐pyrolidone. The photoinduced deprotection of calixarene derivatives 1a – c was examined with bis‐[4‐(diphenylsulfonio)phenyl]sulfide bis(hexafluorophosphate) as a photoacid generator on UV irradiation followed by heating in the film state, and it was found that the deprotection of the t‐BOC groups of 1a proceeded smoothly in high conversion. The deprotection rates of the t‐BOC groups of 1b and 1c were much lower than that of 1a under the same irradiation conditions. The photoinduced deprotection of calixarenes 2b – c containing tetramethylsilane groups as well as 3a – c containing CHE groups were also examined under similar reaction conditions in the film state, and it was found that the deprotection rates of calixarenes 2b – c and 3a – c were lower than those of the corresponding 1a – c calixarenes. © 2001 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 39: 1481–1494, 2001