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N-(3-Amino-4-methoxyphenyl)acetamide is an important intermediate for the production of azo disperse dyes,while it is still produced by reduction with iron powder in industry currently.

摘 要: N-(3-氨基-4-甲氧基苯基)乙酰胺是生产偶氮型分散染料的一类重要中间体。现有的工业生产方法仍全部采用铁粉还原。

It discloses four kinds of diamino monomers such as 1, 4-(4- amnio- 2- trifluoromethyl- phenoxy)- 2-(3'-methyl phenyl)benzene containing fluorine, ether linkage and benzene side chain.

具体公开了四种含氟、醚键和苯侧基的1,4-(4-胺基-2-三氟甲基-苯氧基)-2-(3'-甲基苯基)苯等二胺基单体。

Methylenedioxyphenyl-2-propanone is a useful intermediate for the synthesis of methyldopa,an important antihypertensive agent.

以黄樟素为原料合成了抗高血压药甲基多巴的重要中间体3,4-亚甲基二氧苯基-2-丙酮。

Water samples collected off Malaysia and the U.S. Pacific coast and in the northern Pacific Ocean all contained styrene monomers, as well as styrene dimers and trimers, reported Katsuhiko Saido of Nihon University in Chiba, Japan.

日本大学千叶校区的卡素西口赛一朵称:收集于远离马来西亚海岸、美国太平洋海岸和北太平洋的水样本都含有苯基团单体,二聚体和三聚体。

On the day before FESS, olfactory function was evaluated by a symptom score, a phenyl ethyl alcohol odor detection threshold test, the University of Pennsylvannia Smell Identification Test and a short-term odor memory/discrimination test, and re-evaluated by the same methods 6 months after FESS.

在手术前一日,这些病患的嗅觉功能用问卷、苯基乙醇气味侦测阈值检查、宾州大学嗅觉识别检查及短时间气味记忆分辨检查来评估。

This step is irreversible.(3) Phenyl isopropyl ether is very difficult to oxidize in dark, exhibiting different behavior from isopropyl ether and benzyl isopropyl ether.

3发现苯基异丙醚难以进行暗氧化,与异丙醚和苄基异丙醚醚表现出不同的暗氧化行为。

The N-butyl pyridine tetrafluoroborate (BF4) ionic liquid was synthesized, which was used to prepare the phenyl glycidyl ether as solvent and catalyst.

合成了N-正丁基吡啶氟硼酸盐(BF4)离子液体,并将BF4作为溶剂和催化剂用于苯基缩水甘油醚的合成反应。

The results show that the torsion energy and van der Waals interaction energy are the main types of energy and the substitution group has a great effect on the total energy of molecular. The aliphatic substitution would lead to the increase of total energy, while the aromatic substitution would lead to the decrease of total energy. The calculated results of bond length show that the bond length of aliphatic C—C is longer than that of aromatic C—C, which indicates that the rupture of aliphatic C—C is easier than that of aromatic C—C on heating.

研究结果表明,扭转能和范德华能是分子中的主要作用力,取代基对体系能量有明显影响,烷基取代基使体系能量增加,而苯基取代基使体系能量降低;脂肪C—C键长比芳香C—C键长长,说明脂肪C—C在受热过程中比芳香C—C更容易断裂分解。

With TEMPO(5 mol%) as the catalyst,N-methyl-N-phenyl-hydrazine(1.2 equiv.) as the amine source,the direct ortho-amination of 2-naphthols could be easily achieved.The reaction was carried out at room temperature under air atmosphere.

以5 mol%TEMPO为催化剂,1.2当量N-甲基-N-苯基肼作氨源,二氯甲烷为溶剂,空气中,室温下,实现了对2-萘酚邻位氨基化,可以高效的合成1-氨基-2-萘酚类化合物。

With TEMPO(5 mol%) as the catalyst,N-methyl-N-phenyl-hydrazine(1.2 equiv.) as the amine source,the direct ortho-amination of 2-naphthols could be easily achieved.

以5 mol%TEMPO为催化剂,1.2当量N-甲基-N-苯基肼作氨源,二氯甲烷为溶剂,空气中,室温下,实现了对2-萘酚邻位氨基化,可以高效的合成1-氨基-2-萘酚类化合物。

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According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm~150rpm时取得最大值,此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世,形体几无变化。

When I was in school, the rabbi explained everythingin the Bible two different ways.

当我上学的时候,老师解释《圣经》用两种不同的方法。