cis-[（trans-1，2-双（氨甲基）环丁烷）（3-羟基-1，1-环丁烷二羧酸根）合铂（Ⅱ）]的合成和抗癌活性

通过对洛铂和卡铂的结构进行重组和优化,合成了一种新型洛铂衍生物cis-[（trans-1,2-双（氨甲基）环丁烷）（3-羟基-1,1-环丁烷二羧酸根）合铂（Ⅱ）],采用元素分析、红外光谱、质谱和核磁共振表征了其化学结构,并考察了此化合物的水溶性和稳定性。应用标准SRB法测试了目标化合物对人肺癌细胞株（NCI-H460、A549）、人乳腺癌细胞株（DU4475）、人白血病细胞株（Sup-B15）生长的抑制活性,评价了它对人肺癌细胞NCI-H460裸鼠移植瘤的治疗作用。结果表明：目标化合物水溶性好、稳定,对多种癌细胞的生长有明显的抑制活性,IC₅₀均小于10 μmol·L^-1。更重要的是,其体内对人肺癌细胞NCI-H460裸鼠移植瘤的治疗效果明显,与洛铂相当。     

CoSAPO-34分子筛的合成、表征及其光催化脱氮性能

利用水热合成法,以三乙烯四胺（TETA）为模板剂,正硅酸乙酯、磷酸、氢氧化铝及乙酸钴为原料,合成了CoSAPO-34分子筛。通过扫描电子显微镜（SEM）、粉末X射线衍射（XRD）、热重（TG）、N2吸附-脱附和紫外-可见漫反射光谱（UV-Vis DRS）等方法对合成的分子筛进行表征。以吡啶-正辛烷体系为模拟油品对分子筛催化剂的脱氮效果进行评价,考察了样品的用量、光催化时间及循环催化次数对其脱氮性能的影响。结果表明：当合成原料的物质的量之比为n_P2O5：n_AL2O3：n_SiO2：n_Co：n_TETA=1：0.26：0.82：0.81：2.05,在200 ℃晶化24 h,合成得到粒径约为50 μm、仍保持了SAPO-34分子筛的骨架结构、形貌为立方体的CoSAPO-34分子筛,而且该分子筛具有较好的热稳定性。在500 W氙灯光照条件下反应150 min,样品对质量分数为100 μg·g^-1模拟油品的脱除率达到70%,循环3次光催化脱氮活性基本保持不变。     

镉/铅超分子配合物的合成、晶体结构及理论计算

通过水热法合成了2个新的金属-有机超分子配合物[CdCl₂（L₁）]_n（1）和[Pb（BDC）_0.5（HBDC）（L₂）]·2H₂O（2）（H₂BDC=对苯二甲酸,L₁=2-（4-氨基苯酚）-1H-咪唑并[4,5-f]菲咯啉,L₂=2-（4-N,N''-二甲基苯）-1H-咪唑并[4,5-f]菲咯啉）。并对其进行了元素分析、红外光谱、热重、荧光光谱和X射线单晶衍射测定。配合物1是一维链状结构,配合物2为零维结构,它们均通过氢键和π-π堆积形成了三维超分子结构。此外,还用高斯09程序PBE0/LANL2DZ方法对配合物1和2进行了自然键轨道（NBO）分析,计算结果表明配位原子与Cd（Ⅱ）、Pb（Ⅱ）离子之间存在着共价作用。     

pH值对Bi2MoO6晶体形貌和可见光催化性能的影响

以(NH₄)₆Mo₇O₂₄·4H₂O和Bi(NO₃)₃·5H₂O为原料,采用普通水热法制备Bi₂MoO₆光催化剂,研究pH值对制备该光催化剂的影响.对所制备的系列样品,采用X-射线衍射仪(XRD)、扫描电子显微镜(SEM)、比表面积分析仪、X射线光电子能谱仪(XPS)和紫外-可见漫反射(UV-Vis DRS)进行表征.结果表明:pH值对Bi₂MoO₆晶体的物相组成、形貌和光催化性能均有显著影响.pH值为1~7时,所制备的样品为纯相Bi₂MoO₆,pH值为9或11时,出现第二相Bi_3.64Mo_0.36O_6.55;随着pH值的升高,形貌依次为纳米棒、纳米片和无规则纳米颗粒.在可见光(λ≥420 nm)照射下,通过光催化降解罗丹明B(Rhodamine B,RhB),探讨了制备Bi₂MoO₆的pH值对其可见光催化活性的影响.当pH=7时,制备的样品光催化效果最好,光照50 min后对初始浓度为5 mg·L^-1的罗丹明B溶液的降解率为85%.     

Synthesis and photocatalytic properties of core–shell TiO~2@ZnIn_2S_4 photocatalyst

A novel core–shell TiO2@ZnIn2S4composite has been synthesized successfully by a simple and flexible hydrothermal route using TiO2as precursors.The as-synthesized samples were characterized by X-ray diffraction,UV–vis diffuse reflectance spectra and transmission electron microscopy.The photocatalytic properties of samples were tested by degradation of aqueous methylene blue（MB）under visible light irradiation.It was found that the as-synthesized TiO2@ZnIn2S4photocatalyst was more effcient than TiO2and ZnIn2S4in the photocatalytic degradation of MB.Moreover,TEM images confrmed the TiO2@ZnIn2S4nanoparticles possessed a well-proportioned core–shell morphology.     

H_6P_2W_（18）O_（62）á18H_2O： A green and reusable catalyst for one-pot synthesis of pyrano[4,3-b]pyrans in water

A convenient,effcient and environmentally benign procedure has been developed for the synthesis of pyrano[4,3-b]pyran derivatives via a one-pot,three-component reaction of 4-hydroxy-6-methylpyran-2-one,aldehydes and malononitrile in water using H6P2W18O62á18H2O as catalyst.Reusability of the catalyst and reaction media,short reaction times and easy isolation of products are some added advantages of the present methodology.     

Distereoselective one-pot synthesis of pyrimidopyrimidines using sulfated tin oxide as a reusable catalyst： An extension of Biginelli-type reaction

The Biginelli-type compounds 4,5,8a-triarylhexahydropyrimido[4,5-d]pyrimidine-2,7（1H,3H）-diones were synthesized by a one-pot three-component reaction using sulfated tin oxide as a reusable catalyst. This method has the advantages of high yields, short reaction time, simple starting materials and reusability of catalyst for several times.     

A new method for the synthesis of 3-hydroxymethylbenzofuran

A new one-step synthesis of 3-hydroxymethylbenzofuran, based on intramolecular cyclization of 2- （methoxymethyl）-2-（2＇-methoxymethyl-4＇-methylphenyl）-butanone I under diluted hydrochloric acid in THF, was developed. The mechanism for this process was investigated via chemical equilibrium shift of tautomer in acidic conditions. The applicability of this new method was studied further in this paper.     

Synthesis of pyrazine-2,3-dicarbonitrile and 1,2,4-triazine-5（4H）-one derivatives from furan-2,3-diones

The reaction of furan-2,3-diones with S-methylisothiosemicarbazide hydroiodide yielded novel 1,2,4- triazine-5（4H）-ones, and reaction of furan-2,3-diones with diaminomaleonitrile led to the formation of pyrazine-2,3-dicarbonitrile derivatives, and the hydrolysis of these products led to the formation of more new pyrazine-2,3-dicarbonitrile derivatives. These compounds are potential herbicides and pesticides.