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Synthesis of β-(3,5-Diterbutyl-4-hydroxyphenyl) Propionyl Chloride

3,5-二叔丁基-4-羟基苯基)丙酰氯的合成研究

The Research on Synthesis of 5-amino-3-cyan-N-(2, 6-dichloro-4-trifluoromethylphenyl) Pyrazole and Its Intermediates

中文名称: 5-氨基-3-氰基-N-(2,6-二氯-4-三氟甲基苯基)吡唑及其中间体的合成研究

Preparation of the stemnucleus Ancymidol is introduced as raw material, after bromation, obtains the stemnucleus by salification with triphenylphosphine.

新型膦盐母核的合成:采用嘧啶醇作为原料,经过溴化,由三苯基膦成盐得到。

It is confirmed by the FTIR spectra that the sulfonic acid groups have been linked to PS.

通过傅立叶红外光谱表征证明,磺酸基已经被引入到聚苯乙烯的苯基侧链上。

The optimal reaction conditions were as follows:chloroform was used as the reaction solvent,3,5-propionyl acid 0.02 mol,sulphoxide diloride 0.054 mol,the reaction temperature 50℃ and the reaction time 5 h. Under these conditions,the yield of product was 98.9%.

对酰氯合成条件进行了研究,得出优惠反应条件为:以氯仿作溶剂、β-(3,5-二叔丁基-4-羟基苯基)丙酸0.02 mol、二氯亚砜0.054 mol、反应温度50℃、反应时间5 h,优惠条件下产品的收率为98.9%。

The proposed method has been applied to the direct determination of zirconium in terephthalic acid .

方法用于对苯二甲酸样品中锆的测定,结果与4,5-二溴苯基荧光酮法一致,相对标准偏差为1.6%~2.5%,标准加入回收率为

Photovoltaic Polarity Inversion in Thin Filma of Titanoxophthalocyanine/N,N-Bistolylperylene Tetracarboxylic Dimimide Composite Films

酞菁氧钛/N,N-二甲苯基苝酰亚胺复合薄膜的光伏极性反转

Results indicate that the two types of tetrazole derivative inhibitors have good corrosion inhibition ability for copper in NaHCO3 solution, and they are both anode-type inhibitors.

合成了胍基四唑和1-苯基-5-巯基-1, 2, 3, 4-四氮唑2种缓蚀剂,用失重法和电化学法研究了2种缓蚀剂在5% NaHCO3碱性介质中对铜的缓蚀性能和吸附行为。

The target compounds I_ provide possibility to construct different aryl alkynyl thio ethers.

甲硫基甲基苯基砜是一种用途十分广泛的有机硫试剂。

Some additives that could enhance the enzyme stability were screened through single factor experiments, such as 5 mmolL^(-1) Ca(superscript 2+), 20 mgmL^(-1) trimethylene glycol-single methyl ether, 0.01% 4-formyl phenyl-boron dihydroxide, 1% glycerine.

通过单因素实验得出了对碱性蛋白酶稳定效果较好的几种保护剂:5mmolL^(-1) Ca(上标 2+);20mgmL^(-1)微胶粒抑制剂丙二醇-单甲醚;0.01%可逆蛋白酶活性抑制剂4-甲酰苯基硼酸;1%甘油。

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What would he tell Judith and the children?

他将怎样告诉朱迪丝和孩子们呢?

I this is at that time, the opinion with peacockish true girl is full of in a heart.

这就是当时的我,一个心中布满虚荣的女孩子真实的想法。

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