本文研究了以对甲苯磺酸为催化剂,氯苯为溶剂,室温附近的条件下,苯酚及对叔丁基酚与甲缩醛反应的动力学。
With p-toluene sulfonic acid used as catalyst and chlorobenzene as organic solvent, the reaction kinetics between phenol and acetal have been studied at room temperature.
在氟化钾催化下,芳香醛与氰乙酸乙酯发生克脑文格尔缩合反应,得到高产率的缩合产物。
The knoevenagel condensation of aromatic aldehydes with ethyl cyanoacetate proceeds smoothly in the presence of potassium fluoride giving products in high yield.
系统研究了脂肪甲酮与芳香醛和芳香胺参与的曼尼奇反应。
Mannich reactions with aromatic, aromatic ketones and aromatic aldehydes and their applications were studied systematically.
本文着重介绍了锯末刨花板用价廉物美的淀粉脲醛复合粘合剂制作的反应机理、工艺流程及配方等。
Reaction mechanism, technological process, and formulation of a cheap starch and urea-formaldehyde compound adhesive for saw-dust and shaving boards are mainly described in this paper.
合成了一种季铵化反应性树脂无醛固色剂het,测定了该固色剂对羊毛织物经酸性红g染色后的固色效果。
Quaternized reactive formaldehyde-free color-fixing agent HET was synthesized, and its color fixation effect was tested for wool dyed with acid dye red g.
在水溶液中,壳聚糖与香草醛发生希夫碱反应,生成改性壳聚糖vcg。
Chitosan react with vanillin aldehyde by Schiff's base reaction in water, a polymer product-VCG can be prepared.
此机理不同于只有1,2加成方式的聚乙烯醇缩饱和醛化反应。
This mechanism is different from that for the acetalization reaction of polyvinyl alcohol with saturated aldehydes, which has only 1, 2 addition.
本文研究了磺酸化的聚苯乙烯树脂在酯化、酯交换、缩醛或缩酮的合成、醚的合成及(口片)呐重排反应中的应用。
This paper reports the study on the sulfonated polystyrene resin used in esterification, transesterification, synthesis of acetals or ketals, synthesis of ether and rearrangement reaction of pinacol.
探讨了合成羟基香茅醛的反应条件。
The reaction conditions of synthesizing hydroxycitronellal have been explored.
反应是在装有分馏柱的反应器中进行的,分馏柱能让醛通过但使醇回流到反应器中。
Reaction is carried out under a fractionating column that allows aldehyde to pass but returns alcohol to the reaction vessel .
但由于丙烷的稳定性和丙烯醛的活泼性,该反应对催化剂的要求苛刻,有关的研究并未取得重大的突破。
However, due to the chemical stability of propane and the activity of acrolein, this reaction required a multiple functional catalyst and no great progress was made in this field.
通过一元羧酸和二乙烯基醚的反应,我们得到了一种新颖的酯缩醛结构分子玻璃。
A novel family of ester acetal molecular glass materials has been created by the reaction between monocarboxylic acid and divinyl ethers.
通过氧化反应可以由芳香族化合物得到酚、醛、酮、醌和羧酸等重要的有机中间体和精细化学品。
Phenols, aldehydes, ketones, quinones, carboxylic acids and many other important organic intermediates for fine chemicals can be obtained by oxidizing aromatic compounds.
并对发光反应的机理作了简单的探讨,通过测试说明化学发光反应主要发生在醇氧化成醛这一步。
The mechanism of such chemiluminescence is discussed in brief and is shown that the chemiluminescence occurs in the step of alcohol oxidized into aldehyde.
对2-H苯并咪唑盐与烃基为不饱和取代基的格利雅试剂的加成-水解反应进行了研究,将此反应应用到不饱和醛的制备。
The addition-hydrolysis reaction was applied to the synthesis of unsaturated aldehyde by the -reaction of 2-H benzimidazolium iodide with alkenyl magnesium bromide.
醛缩酶和TNBS之间的反应支持酶分子的氨基,尤其是蛇肌醛缩酶的氨基在维护其天然构象中起着特殊作用的观点。
The reactions between aldolase and TNBS suggest that the amino group or groups, in snake aldolase, may play a special role in maintaining its native conformation.
从山苍子提取出的柠檬醛,与硫酸羟胺反应生成柠朦肟,脱水后可得到柠檬腈。
Lemonile was manufactured by the dehydration of citral oxime obtained by the reaction of hydroxylamine sulfuride and citral abstracted from litsea cubeba oil.
实验结果表明:以磷酸钙为主体的催化剂对缩醛裂解反应具有较高的活性和选择性。
The results showed that the catalyst, with calcium phosphate as the main part, is active and selective in the splitting of acetal.
以离子液体为介质研究了三氯化铟催化的缩醛与缩酮反应。
Acetalization and ketalization reactions catalyzed by indium trichloride using various ionic liquids as media have been investigated in detail.
在此反应条件下,丁醛乙二醇缩醛的收率可达71.1%。
Under these conditions, the yield of butyraldehyde glycol acetal is 71.1%.
以三聚氰胺及未改进的乙二醛为基质的抗水剂,因本身会发生聚合反应,会造成纸张质量的负面影响。
The water-resistance agent with melamine and un-improved glyoxal as matrices has negative effects on the paper quality because of the polymerization potential of its own.
以单质碘为催化剂,通过丁醛和乙二醇反应合成了丁醛乙二醇缩醛。
Butyraldehyde glycol acetal was synthesized from butyraldehyde and glycol by using iodine as catalyst.
在磷酸催化下,由葡萄糖和乙二醇经缩醛化反应制备了乙二醇葡糖苷,可用作化妆品保湿剂。
Ethylene glycol glycosides, useful as humectant in cosmetics, were prepared by phosphoric acid-catalyzed acetalization of glucose with ethylene glycol.
在酸性催化剂下,由葡萄糖和乙二醇经缩醛化反应制备了乙二醇葡糖苷。
Glycol glucoside was prepared from glucose and ethylene glycol in the presence of acid catalyst.
此外,该区的细胞也具有PAS阳性反应和含有被醛复红特异性染色的颗粒。
The cells of the CMZ were positive for PAS and contained the glanulae stained by aldehyde - fuchsin in their cytoplasm.
此外,该区的细胞也具有PAS阳性反应和含有被醛复红特异性染色的颗粒。
The cells of the CMZ were positive for PAS and contained the glanulae stained by aldehyde - fuchsin in their cytoplasm.
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