羟基苯

Schiff base derived from p-hydroxybenzaldehyde and p-aminobenzoic acid was prepared by solid-state reaction at supersonic speed airflow and low-heating. Lophophora shape Cu complexes was prepared from the Schiff base and copper acetate and through adding sodium dodecyl sulfate. The structural composition of complexes was confirmed by FTIR and elemental analysis.

利用超音速气流低热固相法合成了对羟基苯甲醛缩对氨基苯甲酸Schiff碱配体，再以该配体和乙酸铜为原料，通过添加十二烷基硫酸钠的方式制备出了晶形规整的仙人球型配合物，利用元素分析和红外等现代测试手段确定了配合物的结构组成。

These products include sodium percarbonate, percarbamide, 4Na 2SO 4·2H 2O 2·NaCl adduct, tertiary amine oxides, hydrazine hydrate, dihydroxy benzene, quaternary ammonium salt hydrogen peroxide and methylethyl ketone oxime.

介绍了近期国外过氧化氢在部分化学品合成中应用研究新进展，产品包括过碳酸钠、过碳酰胺、4Na2 SO4·2H2 O2 ·NaCl加合物、叔胺氧化物、水合肼、二羟基苯、季铵盐过氧化氢和甲乙酮肟。

Inorganic chemistry ; hydrogen peroxide ; review ; sodium percarbonate ; percarbamide ; 4Na 2SO 4·2H 2O 2·NaCl adduct ; tertiary amine oxides ; hydrazine hydrate ; dihydroxy benzene ; quaternary ammonium salts hydrogen peroxide ; methylethyl ketone oxim

无机化学；过氧化氢；综述；过碳酸钠；过碳酰胺； 4Na2SO4·2H2O2·NaCl加合物；叔胺氧化物；水合肼；二羟基苯；季铵盐过氧化氢；甲乙酮肟；合成；催化剂；质量；安定性；收率

Protocatechuic acid, 4-hydmxyphenyl-lactic acid are separated from the plant for the first time.

原儿茶酸，羟基苯乳酸首次从该种植物中分离得到。

Copper and cobalt oxides catalyst supported on activecarbon showed specific selectivity for salicylaldehyde and realized74% conversion of o-cresol and 57% selectivity for salicylaldehyde.

论文在液相条件下采用多相催化剂和分子氧，首次实现了催化选择氧化邻甲酚和对甲酚合成相应的羟基苯甲醛。

Results Six compounds were isolated and identified as:5α,8α-epidioxy-(22E,24R)-ergosta-6,22-dien-3β-ol,scopoletin,isofraxidin,p-hydroxy benzaldehyde,3,4,5-trimethoxy benzoic acid,protocatechuic acid ethyl ester...

结果得到6个化合物，分别鉴定为：5α，8α表二氧(22E，24R)麦角甾6，22二烯3β醇、东莨菪素、异秦皮啶、对羟基苯甲醛、3，4，5三甲氧基苯甲酸、原儿茶酸乙酯。结论化合物Ⅰ～Ⅵ均为首次从该属植物中分离得到。

It is found that the solubility of dl-p-HPGS is very small in pure acetone and in the solvent with low water content.

在纯丙酮和低含水量的混合溶剂中，对羟基苯甘氨酸硫酸盐溶解度很低。

The optimum technical parameters were obtained as follows:bromating temperature is 15℃,solvent is methyl arcohol, bromating agent is BrCl,the molar ratio of 4-hydroxy-benzaldehyde to BrCl is 1:1.15,reaction time is 2.5 hours.

其工艺参数优化如下：溴化时反应温度选择15℃，溶剂选择甲醇+乙酸甲酯，溴化剂选择氯化溴，对羟基苯甲醛与氯化溴之比为1∶1.15，反应时间选择2.5个小时，滴溴时间约半个小时。

Then we completed the first total synthesis of-Plakoridine A using Eschenmoser couping reaction as akey step. During the synthesis we found the choice of protecting groups and the configuration of the chiralcenter of the substrate play an important role to the key Eschenmoser reaction,so we think our successwould be of guide for synthesizing other polysubstituted pyrrolidines or piperidines.

在论文的第一章中，我们先以易得的对羟基苯乙酸乙酯为原料经多步反应制得了所需的β氨基酸酯，然后利用立体选择性的Aldol缩合反应和内酰胺化反应制得了Plakoridine Alactam，随后，以Eshenmoser缩合反应为关键步骤完成了生物碱-Plakoridine A的首次不对称全合成。

A new Schiff baseH_(2Lhas been synthesized from sulfamethoxazole and complexes of this ligand have been prepared with it and characterized by elemental analysis,infrared spectrum,nuclear magnetic resonance,thermal analysis,molar electric conductance and solubility.

以磺胺甲基异口恶唑与对羟基苯甲醛合成一种新西佛碱(H2L)，并用此配体制备8个稀土配合物，通过元素分析、红外光谱、核磁共振、热分析、摩尔电导和溶解性试验对配合物进行了表征。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。