乙腈

A series of N -bonded donor-acceptor derivatives of phenothiazine containing phenyl, anisyl, pyridyl, naphthyl, acetylphenyl, and cyanophenyl as an electron acceptor have been synthesized.

合成了一系列的N10位取代的吩噻嗪给体受体衍生物，这些受体基团包括苯，苯甲醚，吡啶，萘，苯乙酮和苯甲腈。

In contrast to the previous work in which the ILs were used as solvents,[14,15,21] we observed that when this IL was used in a catalytic amount, the Knoevenagel condensation between ethyl cyanoacetate or malononitrile and carbonyl compounds (Scheme 1) could be performed with high efficiency.

和之前离子液体被用作溶剂的工作作为对比，[14，15，21]我们发现使用催化剂量的这种离子液体时，氰基乙酸乙酯或丙二腈和羰基化合物之间的Knoevenagel缩合(图示1)可以体现出高效率。

Knoevenagel condensation reaction between aromatic aldehyde, malononitrile or ethyl cyanoacetate is promoted by organocatalyst N-methylimidazole.

以1-甲基咪唑为有机小分子催化剂催化芳香醛与丙二腈或氰乙酸乙酯的Knoevenagel缩合反应，反应速度快，操作方便，产率高，后处理简单。

The research aimed to establish a FIPIX method for the determination of fipronil and acephate in 36% emulsifiable concentrate.

［目的］建立在同一液相色谱条件下测定混刹中氟虫腈和乙酰甲胺磷含量的方法。

Genotoxicity of ethylicin and bismerthiazol on Vicia faba root tip cells was studied.

利用蚕豆根尖微核技术研究农药乙蒜素和细菌溴腈对蚕豆根尖细胞的遗传损伤，测定蚕豆根尖细胞的微核率、有丝分裂指数和染色体畸变率。

Objective To evaluate and compare the ability to detect tumor by bis (N-ethoxy-N-ethyl dithiocarbamato) nitrido 99mTc [ 99mTcN 2 ] and 99mTc hexakis-2- methoxyisobutyl isonitrile [ 99mTc-MIBI ].

目的 探讨99mTc-氮-二(N-乙基-N-乙氧基二硫代氨基甲酸盐)[99mTcN2]应用于肿瘤诊断的可能性并与99mTc-甲氧基异丁基异腈(99mTc-MIBI)肿瘤模型显像进行比较。

The formation of the by-products occurring with the aldononitrileacetates of glucose and galactose can be overcome by increasing the ratio of hydroxy-lamine hydrochloride to water in the solution before oximation and acetylation.

通过不断摸索，本文首次找到了在糖腈乙酰酯法制备单糖衍生物过程中控制葡萄糖和半乳糖不出杂峰的条件，并给出了一套快速、准确和实用的日常分析方法。

The main results and conclusions are as following:(1) By using the femtosecond time-resolved fluorescence up-conversion technique, we studied the ultrafast excited state photoisomerization process of 33TC dye molecule.

主要内容和结论如下：(1)利用飞秒时间分辨荧光上转换技术对3，3'-磺酸基丙基噻腈三乙胺盐(33TC)的超快激发态光异构过程进行了研究。

Within carboxylic groups, the coordination properties of carbonyl were studied and tn SEM graphs of picolinic acid, meta-methyl benzoic acid and 2-chloro-benzoic acid systems, a large amount of chains like structures probably caused by crystal growth have been firstly observed.

首次在杯[4]芳烃下沿羟基引进亲电性的三乙氧基硅基异腈酸丙酯，并且根据能量传递与匹配的机理合成了五种新型以改性超分子为功能片段的强键型杂化材料，其中与铽能量传递与发射情况最为优异。

Upon mild oxidation of Ⅸwith iodine in potassium iodide, a disulfide, which was characterized as 3,3'-dithiobis [2-(l-hydroxyethylidene)-3-imino propionitrile], was formed.

将IX用碘/碘化钾温和地氧化得到二硫化物（XIV，即3，3'-二硫-双2-（1-羟乙叉基）-3-亚胺基丙腈。

Now, however, all children continue in "comprehensive" schools, and the eleven-plus determines which courses of study the child will follow.

然而现在，所有的孩子都要在综合学校继续学习，所以这次考试只是决定他们将要学习哪些课程。

Cultivatable land , and led to a general recognition that development must not be carried at the cost of agriculture .

城区的迅速扩大在很多情况下侵占了宝贵的可耕地，使人们普遍认识到发展不能以牺牲农业为代价。