以下为句子列表：
英文: A new method on extraction of phenanthrene from crude anthraceneis given, which includes azeotropic dissolution with ethylene glycol, extraction of carbon tetrachloride, treatment of sulfuric acid and ethyl alcohol recrystallization, in the end, the best
中文: 研究了从粗蒽中提取菲的方法，即用乙二醇对原料进行共沸，以四氯化碳为溶剂并用硫酸处理，最后用无水乙醇重结晶，制定出最佳的工艺路线.
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英文: A planar tetradentate dinuclear ligand, 3, 5-bis(2-pyridyl) pyrazole, was synthesized by a three-step reaction of esterification, condensation and addition.
中文: 以2-吡啶甲酸为原料，经酯化、缩合、加成合成了平面四齿双核配体3，5-二（2-吡啶基）吡唑。
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英文: Abstract: A new method on extraction of phenanthrene from crude anthraceneis given, which includes azeotropic dissolution with ethylene glycol, extraction of carbon tetrachloride, treatment of sulfuric acid and ethyl alcohol recrystallization, in the end,
中文: 文摘:研究了从粗蒽中提取菲的方法，即用乙二醇对原料进行共沸，以四氯化碳为溶剂并用硫酸处理，最后用无水乙醇重结晶，制定出最佳的工艺路线.
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英文: A series of compounds containing tetrahydropyrimidinone ring were synthesized via condensation of asparagine t -butyl ester with aromatic aldehydes and amino acid chlorides.
中文: 由苯甲醛或取代苯甲醛与天冬酰胺叔丁酯和氨基酸酰氯的环化缩合反应合成了一系列四氢嘧啶酮衍生物 ,由核磁共振测定了产物的构象和构象转化的活化自由能。
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英文: A reversed\|phase high performance liquid chromatographic( RP HPLC ) method for the determination of the tetramethylpyrazine(TMP) in Chuanxiong extract, the animal(mouse) serum and cerebrospinal fluid has been developed.
中文: 用反相高效液相色谱法测定了川芎药材、实验动物血液和脑匀浆中的川芎嗪,方法简便快速。
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