水杨醛

Synthesis of 5-nitrosaicylaldehyde was studied by the improved method of the Duff response with polyphosphoric acid.

张维庆，邹亮华，周诗彪，张儒祥，改进Duff反应合成5-硝基水杨醛

Among the above synthesized complexes, the SalenAlQ complexe that is combined from ethylenediamine and salicylal is more effective catalytic activity, because it has smallest steric hindrance.

在合成的系列催化剂中，由乙二胺与不带取代基的水杨醛合成的SalenAlQ因其空间位阻较小，催化活性相对较高。

Salicylaldehyde is a extensive use chemical products. It is widely made use of pesticide, medicine chelating agent production.

水杨醛是一种用途极广泛的精细化工产品，被广泛应用于农药、医药螯合剂的生产。

The hydroxyl group is usually ortho directing but in the case of salicylaldehyde, the chlorine stom enters para to the hydroxyl group and not in the other ortho position.

羟基通常是邻位的指挥羟基的帕拉和不是另一邻位的在自己的位置上但是氯stom在水杨醛的情况上登记。

Using tin, tin as central metal, and Schiff base, formed from potassium salt ofα-amino acid and salicylaldehyde, as substrate, various reaction systems were tested.

在新型的合成思路的指导下，尝试了以锡、锡为中心金属，以氨基酸盐同水杨醛形成的Schiff碱为底物的手性合成体系。

The Schiff base of O-ethylthonophosphoryl-dihydrazine with salicylaldehyde and its Ni, Cu, Zn complexes was synthesized.

合成了O-乙基硫代磷酰二肼的双水杨醛席夫碱(H2L)及以它为配体分别与Ni、Cu、Zn离子形成的配合物，所合成的席夫碱配体及配合物均为未见文献报道的新化合物。

The Perkin method for coumarin synthesis from salicylaldehyde and acetic anhydride has been improved by using calcium acetate as catalyst and polyethylene glycol as activator.

对以水杨醛和乙酸酐为原料合成香豆素的工艺进行了改进。采用乙酸钙为催化剂、PEG为活化剂的工艺路线。

The yield of coumarin could be reached up to 86.6% with lower consumption of acetic anhydride in case the total molar ratio of acetic anhydride to salicylaldehyde=1 9∶1 and the reaction was...

水杨醛与乙酸酐的总摩尔比为 1∶1.9，反应近终点时在( 2 14± 2 )℃保温反应 0 。5h，香豆素收率达 86.6%。

Background and Objective: The basic structure of salicylaldehyde amino acid Schiff base compounds includes a C=N chemical bond.

背景与目的：水杨醛氨基酸Schiff碱基本结构中含C＝N键，当基与金属离子配位后生物活性增强，表现出一定的抗癌、抑菌等活性。

The Perkin method for coumarin synthesis from salicylaldehyde and acetic anhydri de has been improved by using calcium acetate as catalyst and polyethylene glycol as activator.

摘 要 对以水杨醛和乙酸酐为原料合成香豆素的工艺进行了改进。采用乙酸钙为催化剂、PEG为活化剂的工艺路线。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。