1、

The effects of solvent of Grignard reagent, pyridine hydrochloride and boron tribromide on yield of product were investigated.

考察了格氏试剂的溶剂、反应物盐酸吡啶和三溴化硼对脱甲氧基收率的影响。

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3、

In the previous paper the equilibrium constants Keq for protonation of substituted pyridine bases in aqueous solution have been determined.

前文我们对取代吡啶杂环碱在水中质子化作用平衡常数进行了测定[1]。本文利用和前文相同的方法测定了具有不同取代基喹啉碱类的平衡常数[2]。

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4、

The pyridine hemochrome spectrum indicated the presence of protoheme ⅸ as the prosthetic group.

吡啶血色素光谱显示了酶分子以原卟啉Ⅸ(protohemeⅨ)作为辅基。

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5、

Linear regression equation shows the relationship between the frequency of antennary potentials and time, which b value is related with the concentration of pyridine, the higher the concentration is, the larger the b value is.

触角电位受抑制的程度随吡啶浓度升高而增大.从表示触角电位发放频率变化与时间关系的直线回归方程可知,其b值大小与吡啶浓度有关,吡啶浓度越大,b值则越小。

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6、

The central Cu~ ⅱ atom is penta-coordinated by four nitrogen donors of the pyridine rings of two DPQ and an oxygen atom of the perchlorate, and the coordination geometry of Cu~ ⅱ could be considered as an ideal square-pyramidal environment.

中心Cu离子分别与两个DPQ配体上的4个吡啶氮原子以及高氯酸根上的一个氧原子配位,其配位几何构型为理想四方锥。

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7、

The isobaric Vapor-liquid equilibrium data of pyridine and dimethylformamide binary system were determined at 760. 0 mm Hg with modified Rose equilibrium still.

本文采用改进式罗斯平衡釜测定了在760.0mm Hg压力下吡啶-二甲基甲酰胺(以下简称DMF)的汽液平衡数据。

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8、

2-Pyridine chloride and 2, 6-pyridine dichloride has been an important raw material of medicine, pesticide, chemical articles of everyday use and dyestuff etc. This paper introduces synthetic technology, application, market demands and development trends of 2-Pyridine chloride and 2, 6-pyridine dichloride.

2-氯吡啶和2,6-二氯吡啶是重要的医药、农药、日化用品和染料等的原料,文章介绍了2-氯吡啶和2,6-二氯吡啶的合成技术,应用,市场与发展。

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9、

METHODS Starting from 2-amino-5-methyl-pyridine, the key intermidiate 5-methyl-2 ( 1H) pyridone was obtained via the way of diazotization, hydrolysis, then it was aromatized with iodobenzene to give pirfenidone.

方法以2-氨基-5-甲基吡啶为起始原料,经重氮化、水解得到关键中间体5-甲基-2(1H)吡啶酮,再与碘苯反应得到吡非尼酮。

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10、

Synthesis, crystal and molecular structures of azido chromium(ⅲ) tetraphenylporphyrin pyridine complex

迭氮基吡啶四苯基卟啉合铬(Ⅲ)的合成及晶体和分子结构

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11、

A novel bi-pyridine quaternary ammonium salt cationic surfactants was prepared by acrylic modified rosin.

普通松香通过丙烯酸改性,与氯化亚砜、甲醛、吡啶合成新型吡啶双季铵盐阳离子表面活性剂.

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12、

Dibenzyl phosphite was synthesized by benzyl alcohol and trichlorophosphorous in the presence of pyridine.

以苯甲醇和三氯化磷为原料,在吡啶存在下合成了二苄基亚磷酸酯.

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13、

Who have mastered the production of pyridine technology, will have the equivalent of a printing press.

谁掌握了吡啶生产技术, 谁就相当于拥有一台印钞机.

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14、

A classical method to determine the content of cinnamaldehyde is called hydrochloride hydroxylamine-pyridine oximation.

探讨一种无吡啶盐酸羟胺肟化法测定肉桂醛的可行性.

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15、

Quinoline could be hydrogenated into tetrahydroquinoline, which would be cracked into pyridine, aniline and ammonia.

喹啉加氢生成四氢喹啉, 四氢喹啉进一步裂化转化为吡啶 、 苯胺和氨.

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16、

The preparation and purification methods of pyridine hydrochloride were discoursed in the paper.

本文叙述了盐酸吡啶的制备及精制方法.

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17、

Our factory specializes in production and operation of organic chemical solvents: tetrahydrofuran. Pyridine. Chloride stupid. DMF.

本厂专业生产经营有机化工溶剂: 四氢呋喃. 吡啶. 氯化笨.

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18、

Pyridine is alkaline the production that uses extensively at medicine, pesticide, flavor, balata and dye.

吡啶碱广泛应用于医药 、 农药 、 香料 、 橡胶和染料的生产.

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19、

Boron-substituted polyaromatic mesophase prepared by co-pyrolysis of a tar pitch with pyridine-borane complex under autogeneous pressure.

以煤焦油沥青和吡啶硼烷为原料采用加压热缩聚工艺制备硼取代聚芳烃中间相沥青.

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20、

Pyridine and pyridine production base is also a feed additive main raw material for nicotinic acid.

吡啶和吡啶碱也是生产饲料添加剂烟酸的主要原料.

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