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酚合成
相关语句
  phenol synthesis
     Develop Furan Phenol Synthesis Technology
     开发呋喃酚合成工艺
短句来源
  “酚合成”译为未确定词的双语例句
     In the study of 3,5,6-trichloro pyridine-2-ol, 2,3,5,6-tetrachloropyridine hydrolyzed in KOH solution,then reduced by 50% vitriol solution.
     在3,5,6-三氯吡啶-2-酚合成方面,通过2,3,5,6-四氯吡啶在KOH溶液中水解,再用50%H2SO4溶液还原,制取3,5,6-三氯吡啶-2-酚。
短句来源
     The Synthesis of Paracumyl Phenol
     对枯基酚合成工艺
短句来源
     A novel indirect electrooxidation of isoeugenol to vanillin by using Mn ( Ⅲ )/Mn (Ⅱ ) as redox mediator system was described.
     应用Mn~(3+)/Mn~(2+)作为氧化还原中介体体系,间接电化学氧化异丁子香酚合成香草醛。
短句来源
     An Improved Synthesis of o-Benzylphenol
     邻-苄基酚合成工艺改进
短句来源
     Synthesis of Phenolic Resin from Lignite Crude Phenols and Preparation of Its Moulding Plastics
     褐煤粗酚合成酚醛树脂及模塑料
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  相似匹配句对
     Synthesis of Naphthol AS-JH
     色AS-JH的合成
短句来源
     N,N,N?
     合成了 N,N,N?
短句来源
     SYNTHESIS OF ESTRONE
     雌酮的合成
短句来源
     Coumarin fluorescent dyes such as C.
     合成了C.
短句来源
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  phenol synthesis
Study of the corrosion resistance of metals in the media of phenol synthesis from toluene
      
Results indicated that light-induced phenol synthesis in the more heavily insolated foliage of a species led to greater protein-precipitating capacity in these leaves.
      
Direct phenol synthesis from benzene in aqueous solution where water was used as the oxidant through glow discharge plasma (GDP) process was described for the first time.
      
Although the yield of phenol is still not high, these reactions in mild conditions represent a new approach for phenol synthesis.
      


An impurity usually present in gossypol prepared from dianilihogossypol was studied and identified as monoanilinogossypol. It was an unreported compound in the literature. By analytical data it is in agreement with the formula C_(36)H_(35)O_7N, and decomposed at 272~275℃. Absorption maxima were observed at wavelengths 439~440, 311, 278, 288 and 245 nm, shoulder peaks at 464 and 390 nm. The extinction coefficient at 440 nm E_(1cm)~(1%)(CHCl_3) is 329±6, about (1/2) that of dianilinogossypol. The IR exhibit two...

An impurity usually present in gossypol prepared from dianilihogossypol was studied and identified as monoanilinogossypol. It was an unreported compound in the literature. By analytical data it is in agreement with the formula C_(36)H_(35)O_7N, and decomposed at 272~275℃. Absorption maxima were observed at wavelengths 439~440, 311, 278, 288 and 245 nm, shoulder peaks at 464 and 390 nm. The extinction coefficient at 440 nm E_(1cm)~(1%)(CHCl_3) is 329±6, about (1/2) that of dianilinogossypol. The IR exhibit two strong absorptions at 1610cm~(-1) (-CHO)and 1590 cm~(-1) (C=N). On MS m/e 593 (M~+) is recorded. The NMR (in CDCl_3) shows the important signals: δ 11.17 (s, lH, -CHO) and δ 10.13 (d, lH, -HC=N-). The Rf value of monoanilinogossypol on TLC(silica gel-starch, solvent: benzene-chloroform-ethylacetate 40:10:3) is higher than that of gossypol and lower than that of dianilinogossypol. The pure product was pale yellow crystals. The analytical data of synthetic sample are also in agreement with above.The presence of monoanilinogossypol in gossypol interferes with the determination of the latter. Thus, it is necessary to identify the impurity with thin layer chromatography before hand.

本文介绍了棉酚中的一种杂质(苯胺法精制)一苯胺棉酚的研究。该化合物文献中未见报道。实验数据符合组成式C_(38)H_(35)O_7N;质谱分子离子峰593,紫外光谱于439~440 nm有最大吸收(E_(1 com)~(1%) 329±6 CHCl_3);红外光谱在1610 cm~(-1)有醛基和1590 cm~(-1)碳氮吸收峰;核磁共振谱表明有—CHO和—HC=N质子峰,其峰面积比为1:1;熔点272~275℃(分解);硅胶薄层上Rf值界于二苯胺棉酚和棉酚之间。一苯胺棉酚的存在,干扰分光光度法测定棉酚含量的准确性。利用薄层层析法可检查棉酚中一苯胺棉酚的存在与否。本文还介绍了一苯胺棉酚的合成方法。

Paeonol" has been successfully synthesized with our method. The structure of the synthetic compound has been shown by means of chemical and physical methods to be identical with that of the natural products. Since the method of synthesis has been simplified, and the raw materials are easily obtained the massive industrial production of this substance was made possible.

本文报道丹皮酚的合成。合成品经化学法和光谱鉴定,均被证明其结构与天然品完全相同。改进后的合成路线,方法简便,原料易得,适宜于工业批量生产。

This paper describes a new route of synthesis of a series of compounds with thestructure of(where R=n-propyl, n-pentyl, n-hexyl, n-nonyl and n-decyl). All these five com-pounds are prepared successfully from raw materials of p-hydroxybenzoate and p-benzoqui-none in seven steps with high yields. Among them, four compounds of R=n-propyl, n-pentyl, n-nonyl and n-decyl have not yet been reported in the literature. In the synthesisof trans -4-alkoxycyclohexanecarboxylic acids a new synthetic route is adopted, whilethe...

This paper describes a new route of synthesis of a series of compounds with thestructure of(where R=n-propyl, n-pentyl, n-hexyl, n-nonyl and n-decyl). All these five com-pounds are prepared successfully from raw materials of p-hydroxybenzoate and p-benzoqui-none in seven steps with high yields. Among them, four compounds of R=n-propyl, n-pentyl, n-nonyl and n-decyl have not yet been reported in the literature. In the synthesisof trans -4-alkoxycyclohexanecarboxylic acids a new synthetic route is adopted, whilethe synthetic method of 2, 3-dicyano-1, 4-benzenediol is well improved.

本文以对羟基苯甲酸酯和对苯醌为原料,经七步反应合成下列结构的系列化合物。(其中R=n-C_3H_7,n-C_5H_(11),n-C_6H_(13),n-C_9H_(19)和n-C_(10)H_(21)) 对反-4-烷氧基环己烷羧酸的合成制定了一条新的路线;2,3-二氰基-1,4-苯二酚的合成产率比文献值提高9%左右;并对上述化合物进行了元素分析和红外光谱、液晶性能的测定。该类化合物的熔点和澄清点较高,相变温度较宽,是一种较为理想的混合液晶材料。

 
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