1·The chiral HMPA analogues were prepared in high yield by nucleophilic substitution between the chiral secondary amine and phosphoryl chloride.
通过磷酰氯与手性仲胺的亲核取代反应高产率地合成了手性 HMPA 类似物。
2·The nitrogen atoms of amines have what chemists call a lone pair of electrons, and it is this which attaches each amine molecule to the nanotube.
胺上的氮原子存在着一种电子对,化学家们管这叫孤对电子(译者:嘿嘿~高中知识竟然还未忘记),而正是这些孤对电子把胺分子牢牢绑在纳米管上。
3·Researchers from the University of Edinburgh will join the project, testing three different types of amine solution over the next three months.
来自爱丁堡大学的研究人员将会参与到此项计划中来,他们的主要工作将是在未来三个月内负责测试三种不同的胺溶液。
4·And ammonia becomes the feedstock for fertilizers, for almost anything that contains an amine in it, or a nitrogen in it.
氨是化肥的原料,和几乎所有含有胺,或氮的东西的原料。
5·Screening for 2 - bromo-butyric acid as the starting material, after ammonolysis, esterification, ester amine solution, split, five-step cyclization reaction Levetiracetam.
筛选以2 -溴代丁酸为起始原料,经氨解,酯化,酯胺解,拆分,环合五步反应制得左乙拉西坦。