缩合反应收率为20%。
确定了较满意的反应条件，反应收率达86.5%。
本文给出一种苯酐生产中氧化反应收率的最优控制方案。
An optimizing control configuration for oxidizing reaction in the production of phthalic anhydride is proposed in this paper.
考察了不同还原剂和带水剂对反应收率及产品质量的影响。
The effect of the different types of the reductant and water-carrying agent on the yield was investigated.
结论：本方法提高了反应收率，简化了操作，降低了成本。
Conclusion: the method increases telmisartan yield, simplifies its process and decreases the cost.
最终优化了反应条件，提高了反应收率并对产品进行了表征。
The reaction condition and the product was optimized and characterized .
考察反应温度、催化剂用量、反应时间和反应物配比对缩酮化反应收率的影响。
The influence of reaction temperature, dosage of catalyst, reaction time and ratio between reactants was investigated.
该合成工艺条件与方法能有效提高反应收率，降低生产成本，适合工业化生产。
The improved precess and procedure are more suitable for industrial production because of higher yield and lower cost.
通过正交实验研究了影响水解反应收率的因素，找到了一条方便可行的制备方法。
The factors which affect the yield of hydrolysis reaction were studied by orthogonal experiments, and a handy method of preparation for p-chlorophenylacetic acid was proposed.
另外，仅是采取了所有的预防措施，反应收率也会低得可怜，还会有严重的火灾危险。
Moreover, even when all these precautions are taken the yields are poor, and there is a serious fire risk.
ZSTP催化的反应收率高．操作简便，后处理容易，催化剂可以重复使用和再生。
The reactions with ZSTP as catalyst have high yields, are simple to be operated, and worked up. The catalyst can be reused and regenerated.
讨论了不同催化剂、催化剂用量、不同溶剂对反应收率的影响，优选出较佳的反应条件。
The effects of the choice of the catalyst , the amount of the catalyst and choice of the solvent were investigated for the yield and the optimum conditions was found.
研究了乙二硫醇与异戊醛物质的量比、催化剂用量、反应时间等因素对反应收率的影响。
Effects of mole ratio of 1, 2- ethanedithiol to isovaleraldehyde, amount of catalyst and refluxed time were investigated.
探讨了用溴酸钾—磷酸体系溴化苯乙酮的溴化新方法，并讨论了影响反应收率的几个因素。
In this paper, we reported a new method of bromination of acetophenone using potassium bromate in phosphoric acid. Some factors that effect yield are also discussed.
由于相转移催化具有反应条件温和、反应速度快、反应收率高等优点，使其成为研究的热点。
Phase transfer catalysis is hot point now because of its merit of temperate react condition, quick react rate and high production yield.
对影响合成反应收率的各种因素进行了详尽的探讨，最终采用的反应条件重复性好、收率高。
The synthetic condition which can affects the reaction yield in each step is discussed in detail. The last synthetic condition that is used has better repeatable and higher yield.
以该反应收率为目标，研究了反应物料与有机溶剂的配比、反应温度和碱液浓度等因素的影响。
The effects of the ratio of reactants to organic solvent, reaction temperature and concentration of aqueous sodium hydroxide on the yield of trim-tolyl phosphate were investigated.
结论：本方法提高了反应收率，降低了成本，简化了操作，是合成伊班膦酸钠的有效途径之一。
Conclusion: a low cost, high yield, and simple process for preparation of sodium ibandronate is provided.
本文介绍了醇解反应的动力学、影响醇解反应收率的因素以及醇解反应在合成加脂剂方面的应用。
The kinetics and influencing factors of alcoholysis reaction were described in the paper. Application of alcoholysis reaction on synthesis of fatliquor was given also.
考察了反应条件对反应收率的影响，结果表明反应收率可达91.8%，产品纯度在98%以上。
The factors affected the reaction were studied and the result indicates that the yield and purity ofp-ethylbenzoic acid can reach above 91.8% and 98% respectively.
实验表明，吡啶阳离子化反应在DMF中反应收率高，易于分离，为这类染料的工业化提供了可能。
The result of the experiment shows that in DMF yields of cationic reaction is high. Thus it is possible to produce the dyes industrially.
该催化剂不易溶于有机溶剂，反应结束后催化剂易分离，可重复使用3次，反应收率未发生明显变化。
The catalyst solubility in organic solvents is poor, so it could be easily separated after reaction and it could be reused for 3 times, the yields did not reduce significantly.
研究了以苄基三乙基氯化铵为相转移催化剂制备乙酸苄酯，得出了最佳操作条件，使反应收率达86%。
This article studies benzyl - triethyl ammonium chloride as catalyst of phase - transfer to prepare for phenyl acetate. Get the best operating condition and get the yield of 86%.
对甲基异丙烯基酮的合成工艺进行了改进，比较了在不同温度下，对醇酮中间体和脱水反应收率的影响。
Improvement of synthesis process of methyl isopropenyl ketone was introduced, and the yields in different temperature was compared.
报道了抗高血压新药YM- 12617的合成新法，讨论了一些重要的反应条件，报道了各步反应收率。
A new antihypertensive drug YM-12617 was synthesized by a new method. Some crucial reaction conditions were discussed. The yields of the products were given in the paper.
本发明所采用的制备方法具有操作简便、条件温和、反应收率高的特点，易于工业化，具有较高的市场潜力。
The preparation method of the invention is of simple operation with moderate condition and high reaction yield and with great market potential, thus is easy to be industrialized.
在TONALIDE的合成部分，通过单因素试验，找到了反应收率最高的反应条件为：反应时间4小时左右；
In the part of producing TONALIDE, through single-factor-experiments , the highest yield of reaction condition was confirmed as: reaction time about 4 hours;
考察了酰化反应温度、酰化反应时间、硝化剂种类、水解反应时间、还原剂种类、甲酸用量等因素对各步反应收率的影响。
Factors influencing the product yield are discussed, such as nitrating agents, reductive agents, reaction temperature, reaction time, have been investigated.
考察了酰化反应温度、酰化反应时间、硝化剂种类、水解反应时间、还原剂种类、甲酸用量等因素对各步反应收率的影响。
Factors influencing the product yield are discussed, such as nitrating agents, reductive agents, reaction temperature, reaction time, have been investigated.
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