以下为句子列表:
英文: Safrole is synthesized from catechol through methylenation, selective bromination and Wurtz - Fittig reaction Respectively in yield 8.%, 7.%, 7.8% and in total yield .9%.
中文: 本文研究以邻苯二酚为起始原料,经亚甲基化、选择性溴化、武兹-菲提格反应三步合成黄樟油素,其三步收率分别为8.%,7.%,7.8%,以邻苯二酚计,总收率达.9%。
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英文: The Study of the Reaction Mechanism of Bromination of Aqueous Acetone Solution(Ⅰ)——ab initio Calculation for the Reactive Intermediate of the Reaction
中文: 丙酮溴化反应机理的研究(Ⅰ) 从头计算法研究反应中间体
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英文: Therefore,the ring bromina-tion of these aryl ethers by means of NBS has been assumed to proceed via a rea-ction mechanism practically identical to the ring bromination by bromine.
中文: 我们认为芳香醚与 NBS 所进行的苯环溴化的反应机构基本上是与溴的苯环溴化的反应机构相同。
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