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.
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.
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.
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.
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.
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.
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%.
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.
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.
作者发现,在反应中加入适量乙醛代替部分甲醛、可明显提高缩醛胶的性能。
The authors find that the addition of appropriate amount of acetaldehyde to replace a part of formaldehyde distinctly improves the properties of the acetal adhesive.
各种芳香二酸和各种二乙烯基醚化合物在有机溶剂存在下加热反应得到新型的酯缩醛聚合物。
Various aromatic diacids and various divinyl ether compounds are heated to react in organic solvent to obtain novel ester acetal polymers.
研究了强酸性阳离子交换树脂对缩醛合成反应的催化作用,系统地探讨了各反应因素对反应的影响,研究发现,D- 72强酸性阳离子交换树脂具有较高的催化活性,并能重复使用。
This paper investigates the catalysis of D-72 strong acid cation exchange resin on the synthesis of acetals, and systematically discusses the influence of reaction factors on the catalysis reaction.
以单质碘为催化剂,通过丁醛和1,2丙二醇反应合成了丁醛1,2丙二醇缩醛。
The butyraldehyde 1, 2-propanediol acetal is synthesized from the acetalization reaction of butyraldehyde and 1, 2-propanediol, and used iodine as catalysis.
乙醛和丙二醇的缩醛化反应表明丙二醇的转化率主要受催化剂表面弱酸度的影响。
The conversion of propylene glycol was mainly affected by the surface acidity of the catalyst.
以浓硫酸改性煤基活性炭为催化剂,以苯甲醛和乙二醇为原料合成苯甲醛乙二醇缩醛的反应条件进行了研究。
Using concentrated H_2SO_4 modified coal based activated carbon as catalyst, benzylaldehyde glycol acetal was synthesized from benzylaldehyde and glycol.
以浓硫酸改性煤基活性炭为催化剂,以苯甲醛和乙二醇为原料合成苯甲醛乙二醇缩醛的反应条件进行了研究。
Using concentrated H_2SO_4 modified coal based activated carbon as catalyst, benzylaldehyde glycol acetal was synthesized from benzylaldehyde and glycol.
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