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冰醋酸

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Methods: Perchloric acid and glacial acetic acid were volumetric solution. Crystal violet was indicator. Results: The contents determined with microtitration were 98.73% and that of regular titration was 98.71%.

通过微型滴定和常规滴定对比,高氯酸冰醋酸(0.1 mol/L)为滴定液,结晶紫为指示剂,用非水滴定法测定马来酸氯苯那敏的含量。

This thiosemicarbazide was treated under the catalysis of glacier acetic acid,mercuric acetate giving 2 benzyl 5 phenylamino 1,3,4 thiodiazole and 2 benzyl 5 phenylamino 1,3,4 oxadiazole respectively.

然后分别将其在冰醋酸、醋酸汞存在下关环,制得 2 苯甲基 5 苯胺基 1,3 ,4 噻二唑与 2 苯甲基 5 苯胺基 1,3 ,4 口恶二唑

Five chalcones were synthesized via the aldol condensation reaction of acetophenone or parasubstituted acetophenones with 1-phenyl-3-methyl-5-phenoxyl-pyrazol-4-aldehyde, which reacted with two kinds of hydrazine in glacial acetic acid under refluxing to give a series of bipyrazoline derivatives. In this synthetic course, glacial acetic acid is not only a solvent, but also a catalyzer.

以1-苯基-3-甲基-5-苯氧基-吡唑-4-甲醛为原料,与苯乙酮发生羟醛缩合,生成相应的查尔酮,再在冰醋酸中与不同的肼反应,高产率的合成出10种新的5位含1-苯基-3-甲基-5-苯氧基-吡唑基的吡唑啉类衍生物。

Cu2-Co2-KBr with high catalytic activity and selectivity shows synergistic effect between metal ions.Under the reaction conditions of mCu(Ac2:mCo(Ac2:m= 0.1:0.5:0.1, n:n=0.14, glacial acetic acid as solvent, overdosage sodium percarbonate, 65℃, the conversion can reach 45.9% and the selectivity for p-methoxy benzaldhyde is about 68.3%.

结果表明,Cu2-Co2-KBr具有较高的催化活性和选择性,体现出金属离子之间的协同作用,对甲基苯甲醚在mCu(Ac2:mCo(Ac2:m=0.1:0.5:0.1,n:n=0.14,冰醋酸作溶剂,稍过量的过碳酸钠,65℃的条件下,转化率可达45.9%,生成对甲氧基苯甲醛的选择性为68.3%。

MethodsVanillin was used as colour developing reagent in the presence of perchloric acid.

方法利用在高氯酸的条件下香草醛-冰醋酸与三萜酸的反应测定总三萜酸。

Using phenylamine and acetic acid as raw materials,cyclohexane and toluene-p-sulfonic acid as dehydration and catalyst respectively.

以苯胺和冰醋酸为原料,环己烷为脱水剂,对甲苯磺酸为催化剂,采用正交实验法,探讨了乙酰苯胺合成的适宜工艺条件。

Methods Cyclohexane, ethyl acetate and glacial acetic acid (8∶8∶0.8) were used as the developing solvent. Samples were analyzed on a layer plate of silica gel G thin by using 20% phosphomolybdic acid as chromogenic agent.

以环己烷乙酸乙酯冰醋酸(体积比8∶8∶0.8)为展开剂,以羧甲基纤维素钠为黏合剂自制硅胶G薄层板,20%磷钼酸溶液为显色剂,进行薄层色谱分析。

Serum total cholesterol was determined by isopropanol withdrawing and ferric-glacial acetic acid -sulfuric acid developing method, serum triglyecride by isopropanol withdrawing and acetylacetone developing method,serum high density lipoprotein-cholesterol by magnesium phosphotungstate mehod, respectively. Serum low density lipoprotein-cholesterol was calculated by the equation: LDL-C=TCh--0.2 TG.

采用异丙醇抽提、三氯化铁-冰醋酸-硫酸显色法检测血清总胆固醇,用异丙醇抽提、乙酰丙酮显色法检测血清甘油三酯,用磷钨酸镁法检测血清高密度脂蛋白-胆固醇,用等式LDL-C=TCh--0.2TG计算血清低密度脂蛋白-胆固醇。

Factors influencing TiO_2-PILC photocatalystic properties were discussed, including the ratio of CH3COOH and Ti, the temperature and aging time of pillaring agents, pH value of reaction solution, the temperature of calcined, etc.

以钛酸四丁酯为前驱物,冰醋酸为鳌合剂,重点考察了[CH3COOH]/比、柱化剂制备温度和陈化时间、催化剂煅烧温度等对TiO_2柱撑蒙脱土结构的影响。

In our work, as a preliminary experiment, the N-phenacylisoquinolinium bromide was reacted with methlhydrazine in refluxed acetic acid. Unexpectedly, 2-methyl-1,2,3-triazole was obtained. The further study of this reaction led to a more simple starting material,α-bromoacetophenone to react with methylhydrazine, obtaining the same product.

我们在研究N-苯乙酰异喹啉溴化物与甲肼在冰醋酸中的反应时,意外地得到了2-甲基-4-苯基-1,2,3-三氮唑,经过进一步的研究发现α-溴代苯乙酮与甲肼也能得到同样的产物。

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