以下为句子列表：
英文: Abstract: 1-(4-Pyridinyl)-2-propanone,which is the key intermediate of synthesizing the milrinone ,a cardiotonic agent,was synthesized from 4-methyl-pyridine by acetylation in dichloromethane and phase transition catalyzing hydrolysis.The overall yield wa
中文: 文摘:报道了以4-甲基吡啶为原料，经酰化和相转移催化水解反应制备强心药物米利酮关键中间体1-(4-吡啶基)-2-丙酮的新合成方法，总收率达73.1%.
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英文: Ethyl vanillin was synthesized by the phase-transfer catalysis CTEAB and O-ethoxyphenol, which was prepared from pyroeatehol with an overall yield of 55.2%, and the factors in the reaction, such as phase-transfer catalysis and temperature, were discussed.
中文: 摘要以邻苯二酚为原料，首先合成中间体邻乙氧基苯酚，然后以十六烷基三乙基溴化铵为相转移催化剂合成了乙基香兰素，考察了相转移催化剂的选择及反应温度，最后收率为55.2%。
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英文: Results and conclusions The target compound was synthesized from 3-phenyipropanol, and the overall yield was 16.4%, 5.4% higher than the yield reported.
中文: 结果与结论合成盐酸托莫西汀的总收率为16.4%，比文献值提高了5.4%。
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英文: The aglycon moiety was readily obtained from . R-glycidol in 0 steps in an overall yield of .8% via the preparation of the key intermediate S-epoxyheptane.
中文: 以R-缩水甘油和，9-壬二醇为原料，经关键中间体S-环氧庚烷，共0步反应，以总收率.8％制得手性S-药喇叭酸甲酯。
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英文: Highly optically pure sex pheromone of gypsy moth porthetria dispar (7R, 8S)-a was synthesized via asymmetric sharpless epoxidation of a divinylcarbinol (>99% e.e.) and the subsequent chemical transformations in an overall yield of .9%.
中文: 双乙烯基甲醇经过Sharpless不对称环氧化反应合成到高光学纯的午毒蛾Porthetria dispar性信息素(7R,8S)-a,对映体过量大于99％,总产率达 .9％。
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