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苯甲醛

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The manganese dioxide is transformed into manganese sesquioxide at 650°C, and then react with toluene to produce benzaldehyde in the existence of surphric acid in a three phase reactor.

利用二氧化锰650度下灼烧得到三氧化二锰;使用该原料与中等浓度的硫酸和甲苯在反应器内进行固、油、水三相反应,反应结束后甲苯氧化成为产品苯甲醛

The preparation of a novel chiral sulfonamide alcohol derived from natural camphor and its application in the titanium tetraisopropoxide-promoted enantioselective addition of diethylzinc to benzaldehyde is described.

由天然樟脑合成了一个新手性磺酰胺醇,并对其在二乙基锌对苯甲醛的对映选择性加成中的催化性能进行了研究,获得了73%化学产率和

Using triethanolamine and thionyl chloride as raw materials,tri-(3-chloroethane)amine is synthesized by substitution reaction in the presence of solvent chloroform.

以三乙醇胺和氯化亚砜为主要原料,通过取代反应合成三(2-氯乙基)胺,再在氮气的保护下,经过与对羟基苯甲醛反应,生成三胺,探讨了合成反应的工艺条件。

Different concentrations on the behavioral responses of western flower thrips have a certain influence, which, inter anise aldehyde, benzene, formaldehyde 1%, 10% of the difference between, other agents were not significantly different.

不同浓度对西花蓟马的行为反应也有一定的影响,其中除大茴香醛、苯甲醛1%、10%之间有显著差异外,其他的药剂均没有显著差异。

The results show that the conversion of toluene is effected by the temperature and resid...

研究结果表明,甲苯转化率受温度和停留时间的影响较大,尤以温度影响更为明显;主产物选择性受温度和停留时间的影响较小,但停留时间延长,会加剧苯甲醛向苯甲酸转化。

About 100% yield of cyclohexanemethanol could be obtained in the presence of triethylamine if adding more catalyst and prolonging the reaction time.

在三乙胺存在下,增大催化剂用量并延长反应时间,苯甲醛可以100%的收率转化为环己基甲醇,没有出现任何副产物。

Tyramine was synthesiaed from p-thydroxybenzaldehyde through condensation with nitromethane and then reduction with tin powder and hydrochloric acid.

以对羟基苯甲醛和硝基甲烷为原料,经缩合和锌粉、盐酸还原合成酪胺,两步反应总收率61%。

Some preparation methods of galanthanime including extraction and organic synthesis were summarized, such as extraction from narcissus, galanthus woronawii losink, and lycoris radiate and countereurrent chromatography refining, and enzymatic extraction from hyacinths orientalis, as well as the organic synthesis using 3,4-dimethoxybenzaldehyde, methyl 3,4,5-trihydroxybenzoate, isovanilin and tyramine as raw material.

概述了加兰他敏从黄水仙、沃氏雪花莲中提取、石蒜中提取及逆流色谱法精制、喇叭水仙酶法中提取的方法、工艺;以3,4-二甲氧基苯甲醛、3,4,5-三羟基苯甲酸甲酯和异香草醛和酪胺为起始原料合成加兰他敏的方法。

Acetalization of Benzaldehyde with 1,2 Propanediol over Dealuminated USY

脱铝超稳Y沸石催化苯甲醛与1,2-丙二醇的缩醛化反应

In comparison with traditional solid acidiccatalyst of HY, the sulfonic-functionalized mesoporous silicas showedsuperior catalytic performance in the reaction of acetalization betweenbenzaldehyde and alcohols.

其与传统沸石固体酸催化剂HY相比显示了较好的催化性能,应用在苯甲醛与醇类缩合反应中缩醛产率已达到90%,而且具有很好的重复使用性能。

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However, as the name(read-only memory)implies, CD disks cannot be written onorchanged in any way.

然而,正如其名字所指出的那样,CD盘不能写,也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口,替代木托盘,免薰蒸,符合欧盟、北美各国对出口货物包装材料的法令要求;喷涂钢托盘适用于重载上货架之用,托盘表面根据需要制作成平板状、波纹状及间隔形式,满足不同的使用要求。

A single payment file can be uploaded from an ERP system to effect all pan-China RMB payments and overseas payments in all currencies.

付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。