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Alkylation of ambident nucleophiles different places by using phase-transfer catalytic agent were studied in this paper.

本文研究在相转移催条件下对两可亲核试剂不同位置的反应。

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The phenols were O-alkylated with 100% conversion and 100% selectivities using phenacyl bromide and benzyl bromide as alkylating reagents.

用溴代苯乙酮和溴苄为试剂,以高产率和100%的转率以及100%的得到酚的O-产物。

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General approaches involve the nucleophilic cycloalkylation, carbenoids addition of certain amino acid derivatives and derivatization from simple cyclopropane compounds.

制备方法包括对简单氨酸衍生物的亲核环、类卡宾加成以及简单环丙合物的衍生合成等。

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Alkylation of Phenylacetonitrile was realized from phenylacetonitrile and benzyl chloride by using PS-PEG-400 as triphase phase transfer catalyst.

摘要利用固载聚乙二醇-400作三相相转移催剂,以氢氧钾的水溶液作碱,从苯乙腈和苄氯出发合成苯乙腈的单物-α-苄苯乙腈。

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Modified larch tannin was prepared by grafting copolymerization and sulfoalkylation, and successfully used as retanning agent, possessing good water solubility and enhanced penetration rate.

利用接枝共聚和磺的方法对落叶松单宁改

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N butyl 2 ethoxy thioacridone was prepared from o chloro benzoic acid and p phenetidine by means of Ullman reaction,cyclization,N alkylation and sulfurization.

以邻氯苯甲酸和对乙氧苯胺为原料,经过胺的苯、二芳胺的环、N-、硫代反应合成N-丁-2-乙氧硫代吖啶酮。

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A new camphol sandaliol was synthetized by selective alkylation of isocamphol and phenol with acidic catalyst, and following hydrogenated in the presence of Raney nickel.

本文用异龙脑与苯酚在酸剂作用下进行反应,再经催还原得到龙脑檀香产品。

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双语版 TED-Ed 演讲精

Take, for example, those first chemotherapy drugs, which are still used today and are called alkylating agents.

批化疗药物举例,那些药物如今仍在使用,被称为烷基化剂。

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Because cancer cells multiply rapidly, they take in a high concentration of alkylating agents, and their DNA is frequently exposed and rarely repaired.

因为癌细胞迅速繁殖,它们吸收高浓度的烷基化剂,它们的DNA经常暴露在外,复。

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双语版 TED-Ed 演讲精

So they die off more often than most other cells, which have time to fix damaged DNA and don't accumulate the same concentrations of alkylating agents.

因此癌细胞比其他大多数细胞死亡的频率更高,其他细胞有时间复受损的DNA并且不会累积相同浓度的烷基化剂。

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