苯乙酮
- 与 苯乙酮 相关的网络例句 [注：此内容来源于网络，仅供参考]
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Results: An acetophenone derivatives was isolated and identified as 2,4-dihydroxy-f-methoxy-3-methylacetophenone with a concentration〉98oA.
结果：鉴定该化合物为2，4-二羟基-6-甲氧基-3-甲基-1-苯乙酮，纯度〉98%，用于狼毒制剂结核灵片的质量控制。
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The results indicate that the acetophenone conversion is affected orderly by substrate concentration, reaction time, reaction temperature and yeast concentration.
结果表明，影响苯乙酮转化率的因素依次为底物浓度、反应时间、反应温度和酵母浓度，影响1苯基乙醇对映选择性的因素依次为反应温度、底物浓度、酵母浓度和反应时间。
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Ee value was achieved when acetophenone was chose as the substrate under the optimal condition.
研究了该催化剂催化的以苯乙酮为底物的不对称硅腈化反应，在最佳反应条件下得到了69%的ee值。
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The Problems of Spectrum, Quantum Yield of Phosphorescence, Photosensitization and Photostabilization of Polymeric Acetophenone and Its Derivatives
高分子苯乙酮及其衍生物的光谱、磷光量子产率及光敏化光稳定问题的研究
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The results indicated that acetophenone can be reduced by NaBH4/BF3·Et2O wit...
Et2O还原苯乙酮可以获得很高的化学产率和低到中等的对映选择性。
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A gas chromatographic method to determine the conversion of asymmetric hydrosilylation of acetophenone has been established.
建立了由气相色谱法测定苯乙酮不对称硅氢化反应转化率的定量方法，操作简便、迅速，重复性和精密度较好，多个样品各重复6次的变异系数均小于1％，且结果与1HNMR法测定结果一致。
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A new way of synthesis 2-methoxy-4'-trifluoromethyl acetophenone by the method of crossed ester condensation was investigated in the overall yield of higher than 85%.
本文提出了一种新的方法——交叉酯缩合法合成2-甲氧基-4'-三氟甲基苯乙酮。
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A novel method for the synthesis of α-bromo acetophenone s by the reaction of 1,3-dibromo- 5,5-dimethylhydantoin with p-toluenesulfonic acid in methanol at 20～60 ℃ was described.
报道了使用1，3-二溴-5，5-二甲基海因和对甲苯磺酸在甲醇中和20～60℃的温和条件下合成α-溴代苯乙酮的新方法。
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The synthesis of methyl benzoate was carried out from acetophenone and dimethyl carbonate in the presence of solid acid and base catalysts.
以固体酸碱为催化剂，研究了碳酸二甲酯与苯乙酮合成苯甲酸甲酯的反应，考察了反应温度、反应时间、催化剂用量和原料摩尔配比等因素对反应结果的影响。
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In this work, the problems of spectrum, quantum yield and lifetime of Phosphoresconce, photosensitization and photostabilization of polymeric acetophenone and its derivatives have been studied.
本工作合成和研究了高分子苯乙酮及其衍生物的光谱、磷光量子产率、磷光寿命以及光敏化、光稳定等问题。
- 推荐网络例句
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For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether
年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。
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Eph. 4:23 And that you be renewed in the spirit of your mind
弗四23 而在你们心思的灵里得以更新
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Lao Qiu is the Chairman of China Qiuyang Translation Group and the head master of the Confucius School. He has committed himself to the research and promotion of the classics of China.
老秋先生为中国秋阳翻译集团的董事长和孔子商学院的院长，致力于国学的研究和推广。