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glyoxylic acid reaction 乙醛酸反应
Synthesis of vanillin from guaiacol and glyoxylic acid was studied.The reaction conditions were optimized.The total yield of vanillin was 65.6%. 对愈创木酚和乙醛酸缩合一氧化制备香兰素工艺进行了研究;对反应条件进行了优化;使香兰素总收率达65.;6%25。
The synthesis of glyoxylic acid by ozonization of maleate was studied, the influence of technological parameter on the reaction during ozonization process were investigated. 对马来酸酯臭氧化合成乙醛酸的技术进行了研究,重点考察了臭氧化过程中的工艺参数对反应的影响。
A new method was developed in the synthesis of DL-p-hydroxyphenylglycine by the reaction of phenol,sulfamic acid and aqueous solution of glyoxylic acid. 报道了氨基磺酸与乙醛酸和苯酚作用合成DL-对羟基苯甘氨酸的新方法。
The reaction mechanism between aldehyde acid( including multiple aldehyde acid and glyoxylic acid) and collagen was studied by means of collagen molecule modification, amino acid analysis, and other analytical techniques. 采用胶原分子修饰、基酸分析等方法,初步探讨了多元醛酸和乙醛酸与皮胶原的反应机理。
Paired electrosynthesis using glyoxylic acid as a model product has been studied in this paper. 以乙醛酸为模型产物，对配对电解合成技术进行了研究。
The method for synthesizing DL-p-hydroxyphenylglycine with glyoxylic acid,phenol and phthalimide was investigated. 对利用乙醛酸、苯酚、邻苯二甲酰亚胺合成DL-对羟基苯甘氨酸的方法进行了研究。
Glyoxylic acid was rapidly synthesized by catalytic oxidation of glyoxal with H2O2. 在催化剂存在下,用双氧水氧化乙二醛溶液快速合成了乙醛酸。
Absorbance ratio derivative method was developed for the simultaneous determination of glyoxal(GLY) and glyoxylic acid(AGLY). 利用比值导数波谱法同时检测乙二醛(GLY)和乙醛酸(AGLY),为GLY催化氧化过程的实时、快速分析提供了新的手段。
Allantoin is prepared by oxidation of the aqueous solution of glyoxal into glyoxylic acid which is then used to synthesize allantoin. 尿囊素的合成是用硝酸氧化乙二醛溶液制得乙醛酸后，再加入氢氧化钙和氯化钙，使乙醛酸以钙盐形式析出，然后在盐酸介质中与尿素缩合而成。
The pickled pelt or bated hides were pretreated separately with glyoxylic acid,amino compounds and dicyandiamide resin etc. 用氨基化合物,乙醛酸和双氰胺树脂等分别处理浸酸裸皮的软化裸皮后进行少铬鞣制。
It has been proved by the method of Feulgen nucleic acid reaction that the "nuclcolar vesicle" contained DNA. 这些“核仁小泡”的DNA化学特性,应用孚尔根核酸反应得到了证实。
The malondialdehyde (MDA) contents of mitochondria were measured by the method of thiobarbituric acid reaction (TBA). 用硫代巴比妥酸 (TBA)反应法测定丙二醛 (MDA)含量。
Using potentiometric titration in DMF solution, the concentration of glyoxylic acid in the oxidation product of glyoxal can be accurately and conveniently determinated. 利用电位滴定仪,以DMF作为溶剂能方便准确地测定出乙二醛液相氧化液中乙醛酸的含量。
Freely soluble in sodium hydroxide solution, its Solution appears acid reaction. 溶于氢氧化钠溶液，水溶液呈酸性反应。
Glyoxylic acid was an important organic chemistry midbody, with its chemical property active,its application field was very abroad and its production was highly paid attention to. 乙醛酸是一种重要的有机化工中间体,化学性质活泼,应用领域广泛,因而它的合成倍受关注。
The pickled pelt or bated hides were pretreated separately with glyoxylic acid,amino compounds and dicyandiamide resin etc.,then tanned with less chrome. 用氨基化合物,乙醛酸和双氰胺树脂等分别处理浸酸裸皮的软化裸皮后进行少铬鞣制。
Detailed discussion of acid reaction conditions and the impact of factors,cinder of iron oxide decomposition rate of over 95%. 详细讨论了酸解反应工艺条件及影响因素,使烧渣中的氧化铁分解率达95%25以上。
Under acidic condition,5-(P-hydroxyphenyl)hydantion was synthesized by the reaction of glyoxylic acid,phenol,uren and so on as a raw material,in the presence of methanol as catalyst. 以低碳醇(甲醇、乙醇)为催化剂,乙醛酸、苯酚、尿素等为原料,在酸性条件下一步法合成了5-对羟基苯乙内酰脲。
The acid gelling of less additive can reduce leak in crack or hole and delay acid reaction to penetrating through farther. 研究出的低聚合物加量胶凝酸体系,降低酸液滤失,实现酸液缓速和深穿透的目的。