1、

Two derivative dyes from the parent dyes were obtained by nucleophilic substitution reaction in which two primary aminophenol were employed as the nucleophilic reagent.

将母体染料的中位氯原子用氨基酸试剂亲核取代,衍生合成了两个中位氨基酸取代的七甲川菁染料。

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2、

The essence of primary battery is redox reaction.

原电池的本质是氧化还原反应。

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3、

this reaction is good in universality, all kinds of substituted diazoketones, nitroalkenes and benzyl amine or π-conjugated primary amine can afford corresponding products.

反应的普适性很好,各种取代的重氮酮,硝基烯烃以及苄胺或者其他的π共轭的伯胺对该反应都有很好的适用性。

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4、

Isomerization occur during bromine reaction, that is mean secondary allylic configuration changes into primary allylic configuration.

在溴化反应过程中存在分子结构重排, 即溴代仲位烯丙基构型向溴代伯位烯丙基构型发生转化.

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5、

N-guanylurea dinitramide ( GUDN) was synthesized with N-guanylurea hydrochloride as primary substance by hydrolysis and double decomposition reaction in turn and the overall yield of GUDN is79%.

以盐酸脒基脲为原料,通过水解、复分解反应,合成了N-脒基脲二硝酰胺盐(GUDN),总收率可达79%。

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6、

The primary factor leading to therapy termination was adverse reaction of the drug ( 56.74%); and the next was death ( 36.17%);

终止治疗的首要原因是药物副反应引起停药(56.74%),其次是死亡(36.17%);

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8、

The structure of amyl alcohol affects both the initial reaction rate and the ultimate yield of amyl n caprylate in the following sequence: primary alcohol> secondary alcohol> tertiary alcohol.

醇结构对MIECC有影响,在反应初速率及平衡产率方面均遵循伯醇>仲醇>叔醇的规律。

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