Three-component condensation of diethyl 2,4,6-trioxoheptanedicarboxylate with salicylaldehyde and ammonium acetate as a new method for the synthesis of the [1]benzopyrano[4,3-<Emphasis Type="Italic">b</Emphasis>]pyridine system

Three-component condensation of diethyl 2,4,6-trioxoheptanedicarboxylate with salicylaldehyde and ammonium acetate in EtOH affords 2,5-diethoxycarbonyl-5-hydroxy-4-oxo-4,4a, 5,10b-tetrahydro-1H-[1]benzopyrano[4,3-b]pyridine. Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1494–1496, June, 2005.     

Synthesis of 5-ortho-Carboranylsalicylaldehyde and an Indolinospirobenzopyran

5-ortho-Carboranylsalicylaldehyde was prepared from 5-iodosalicylaldehyde in six steps in 18% overall yield, and also from 5-iodosalicylic acid in seven steps in 45% overall yield. The reaction of 5-ortho-carboranylsalicylaldehyde with Fischer's base gave a spiropyran in 63% yield.     

2-氯-5-三氟甲基苯胺水杨醛Schiff碱的结构及光谱性质研究

Schiff碱及其络合物的合成一直是研究的热点,其在药学、催化等领域有广泛的应用。实验以2-氯-5-三氟甲基苯胺、水杨醛为原料,合成2-氯-5-三氟甲基苯胺水杨醛Schiff碱,测定了Schiff碱的红外光谱和氢谱。利用密度泛函理论（DFT）B3LYP方法在6-311++G**基组上对合成的Schiff碱化合物进行了几何构型的优化和红外光谱的计算,得到了分子的优势构象、频率值及对应的红外强度,并比较了实验和理论计算的光谱数据,对分子的振动模式进行了全面的光谱归属,发现理论计算与实验测试结果吻合的较好。     

微波辐射下苯并吡喃衍生物的合成

以邻羟基芳香醛、活性亚甲基化合物为原料，在乙二醇溶剂中经微波辐射得到 一系列苯并吡喃衍生物，产物的结构通过红外光谱、核磁共振光谱及元素分析表征．     

水杨醛水杨酰腙与镓的荧光反应及其应用

测定了水杨醛水杨酰腙的离解常数。研究了试剂与镓荧光反应体系的最佳条件，观察到在ＰＨ３．２－氯乙酸缓冲液和乙醇：水＝２：３介质中，络合物组成比为１：３（镓：试剂），λｅｘ／λｅｍ＝３７０／４５５ｎｍ。建立镓分析方法的线性范围为０－１４０μｇ／Ｌ，相对标准偏差２．４％，检测限为１．４μｇ／Ｌ。考察了３６种共存组分的干扰情况，方法用于适当分离的半导体材料硅和地质样品中痕量镓的测定，结果满意。     

水杨醛—5—溴—水杨酰腙与锌的高灵敏度荧光反应及其应用

合成了新荧光试剂水杨醛－５－溴－水杨酰腙（ＳＡＢＳＨ），详细研究了试剂与锌的荧光反应新体系的最适宜条件．在ｐＨ７．９的异丙醇／水（体积比１∶１）溶液中，该试剂与Ｚｎ２＋形成配合物，组成比为１∶２（金属∶试剂），λｅｘ／λｅｍ＝３９３ｎｍ／４６５ｎｍ．所建立锌的荧光分析方法的线性范围为０～４００μｇ／Ｌ，相对标准偏差为１．２％，检出限为１．３μｇ／Ｌ．考察了３６种离子的干扰情况．方法成功地用于面粉、大米、人尿和矿泉水中痕量锌的测定．     

Synthesis and Crystal Structure of Tri(4-(3-hydroxy2-ethyl-4-pyridinone-1-yl)-aniline Condensation Salicylaldehydato) Monohydratotricopper(II)Dimethylformamide Monohydrate Solvate

1 INTRODUCTION Synthesis of transition-metal complexes with Schiff-base has been a subject of considerable im- portance[1, 2]. These complexes are not only good coordination agents for Schiff-base, but also good bactericide and antitumour agent[3, 4]. A number of hydroxypyridinones are nontoxic compounds that have been applied in bioinorganic chemistry over many years[5], and their iron(III) complexes have been assessed for the amelioration of anaemia[6]. They have also been examined …     

席夫碱三核锌(II)配合物的晶体结构及荧光活性研究

以二甲基甲酰胺(DMF)为溶剂成功合成了水杨醛缩水杨酰肼席夫碱/2-氨基吡啶/锌三元混配配合物晶体, 通过测定配合物的红外、元素分析和单晶衍射等物理性质, 确定该配合物是一种三核配合物. Ｘ射线衍射实验结果表明: 标题配合物晶体属于三斜晶系, 空间群为P1, Z＝1, 分子式为Zn₃(L1)₂(2-NH₂-py)₄•0.5DMF, a＝1.15359(9) nm, b＝1.92734(15) nm, c＝2.31772(19) nm, α＝78.290(2)°, β＝78.6930(10)°, γ＝88.1090(10)°, V＝4.9478(7) nm³, D_c＝1.498 g/cm³. F(000)＝2288, μ(Mo Kα)＝1.506 mm^－1, R＝0.0449, wR＝0.0787. 同时在DMF溶液中测定了该Schiff碱及其锌配合物的荧光活性.     

稀土与水杨醛-1H-苯并三唑乙酰腙配合物的合成及抑菌实验

SBTH;生物活性;稀土与水杨醛-1H-苯并三唑乙酰腙配合物的合成及抑菌实验     

Synthesis of 3‐Aryl‐5‐t‐butylsalicylaldehydes and their Chiral Schiff Base Compounds

Six meta‐substituted salicylaldehyde compounds have been prepared in 68–90% yields by the Suzuki–Miyaura coupling reaction using 3‐bromo‐5‐t‐butylsalicylaldehyde (1a) and arylboronic acids (2a–f) as reactants. Among the obtained products, 3‐(4‐fluorophenyl)‐5‐t‐butylsalicylaldehyde (3b), 3‐(4‐methylphenyl)‐5‐t‐butylsalicylaldehyde (3d), 3‐(1‐naphthyl)‐5‐t‐butylsalicylaldehyde (3e), and 3‐(2‐naphthyl)‐5‐t‐butylsalicylaldehyde (3f) have not been reported so far. A series of new Schiff base ligands (L1–L10) were obtained in 51–89% yields from these salicylaldehyde derivatives.