查询词典 salicylaldehyde

The method of coumarin synthesis using salicylaldehyde was selected,flow chart and operation process were studied in this paper.

对香豆素常用的三种合成方法进行了介绍，对其工业化生产的优缺点进行了对比，最终选定了水杨醛法，并给出了工艺流程图和操作步骤。

In the presence of NaH and in DMF, the acyclic crown ethers 1a and 1b were synthesized by the reaction of di-or triethyleneglycol ditosylate and o-methoxymethoxybenzyl alcohol, which was obtained from salicylaldehyde via the protection of the hydroxyl group with chloromethyl methyl ether followed by the reduction of the formyl group with NaBH4. The hydrolysis of 1a and 1b with dilute hydrochloric acid provided the diphenolic type acyclic crown ethers 2a and 2b respectively in good yield.

将水杨醛与碱和氯甲基甲基醚反应，再经过NaBH4还原，即制得邻苯甲醇，然后将其在DMF中与NaH和二甘醇二对甲苯磺酸酯反应，得开链冠醚1a和1b.1a和1b经稀酸水解，即脱保护而分别生成新的酚型开链冠醚2a和2b。

Eight hydrazone Schiff bases have been synthesized by the reaction of salicylaldehyde, o–vanillin, 2-hydroxy-1-naphthaldehyde with nicotinic or isonicotinoyl hydrazide in anhydrous ethanol respectively; Three thiosemicarbazone Schiff bases have been synthesized by the reaction of salicylaldehyde, o–vanillin, o–hydroxyacetophenon with thiosemicarbazide in hydrous-ethanol respectively.

主要包括以下五部分的工作： 1、以水杨醛、邻香草醛、邻羟基萘甲醛、邻羟基苯乙酮分别与烟酰肼和异烟酰肼按1：1的比例在无水乙醇中反应，制备了八种酰腙类Schiff碱；以水杨醛、邻香草醛、邻羟基苯乙酮与氨基硫脲在水-乙醇混合溶剂中反应，合成了三种Schiff碱配体，并对Schiff碱配体的结构进行了表征。

IR studies of Co metal ion complexes with salicylaldehyde benzoyl hydrazone in solid state brings out the deprotonation of phenol in the formation of Co in pH 5—6 solution.On the contrary,the phenol is protonated in the formation of Co 2 in pH 8—10 solution,which is the same as the result of Zn 2 formation.

水杨醛苯甲酰腙钴络合物在固态的红外光谱分析表明，p H约 5— 6时，生成的络合物Co中的酚羟基脱质子，当 p H控制在 8— 10时，生成的络合物 Co 2 酚羟基质子化，即酚羟基未脱除质子，与络合物 Zn 2 的 IR结果相同。

A novel isomer containing oxygen bridge has been found in the salicylaldehyde-participated Biginelli reaction.

在研究水杨醛参与的Biginelli反应时，我们发现了一种结构新颖的含氧桥的桥环异构体。

The catalyst, palladium supported with chitosan condensated with salicylaldehyde, was studied in hydrogenation ofα-octene, nitrobenzene, 4-nitrophenol and m-dinitrobenzene, it was active and good selectivity forα-octene and nitrobenzene, when the activation time is 90 min, the catalyst showed the best hydrogenation active.

壳聚糖缩水杨醛负载不同比例PdCl_2的催化剂对α-辛烯、硝基苯、4-硝基酚和间二硝基苯的催化性能进行了研究，结果表明该催化剂活化90 min时加氢催化活性最好，对α-辛烯，硝基苯的催化选择性在催化5 h时达到了100%。

In this paper,investigation has been made on the process for the synthesis of salicylaldehyde by esterification-oxidation with phenol,paraformaldehyde,boric acid as initial materials.

探索了以苯酚、硼酸和多聚甲醛为原料的酯化氧化法合成水杨醛的工艺路线，根据反应特点，改进了酯化反应方式，采用了多聚甲醛气态解聚法作为羟甲基化反应的进料方式，探讨了羟甲基化反应温度、多聚甲醛原料含水量、催化氧化反应催化剂用量对反应收率的影响并得到最佳反应条件，水杨醛收率为60.5%，纯度达98%以上。

In the presence of 0.10 molar equivalent of salicylaldehyde, L-lysine racemization can be completed within 4 h in 1.0 mol/L of NaOH at 100℃.

在在场的0.10摩尔相当于水杨醛， L -赖氨酸消旋可以完成4小时，在1.0 mol / L的氢氧化钠在100 ℃。

Four new salicylaldehyde derivatives with a glucose or mannose moiety were synthesized with 2-tert-butylphenol or 4-tert-butylphenol as the starting material, followed by the formylation, chloromethylation, nucleophilic substitution reaction with the desired carbohydrate. The salicylaldehyde derivatives condensed with ethylenediamine to give the Schiff bases, which coordinated with Mn to afford four novel sugar-based Salen Mn complexes.

首先，分别以2-叔丁基苯酚和4-叔丁基苯酚为起始原料，经过甲酰化反应、氯甲基化反应、和糖类衍生物的亲核取代反应制得了四种新型并入葡萄糖基或甘露糖基的水杨醛衍生物，将它们与乙二胺缩合生成希夫碱配体，得到的配体与过渡金属Mn~(3+)配位制备出四种新型含糖基的Salen Mn配合物。

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。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

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起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。