| 1. | After centrifugation , ammonium sulfate was increased to 70 % to get the enzyme
分离过程酶的总收率为35 ，提纯倍数为54 . 9 。 |
| 2. | Results : the structure of final compoud was confirmed by ir 、 melting point , and the overall yield was 55 %
结果：目标化合物经红外、熔点确证，总收率为55 % 。 |
| 3. | 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
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 % 。 |
| 4. | The hydrazinecarbothioamide was prepared from hydrocyanic acid , hydrazine hydrate , and sulphur . the total yield is over 80 %
摘要介绍了以氢氰酸、水合肼、硫磺为主要原米制备氨基硫脲的工艺过程，探讨了合成工艺条件，反应总收率在80 %以上。 |
| 5. | Beginning with fluorobenzaldehyde , cyfluthrin was synthesized by bromination , acetalation , etherification , hydrolysis , and esterification , with a total yield of 45 %
以对氟苯甲醛为起始原料，经过溴化、缩醛化、醚化、水解、酯化合成氟氯氰菊酯，总收率45 % 。 |
| 6. | Abstract : the synthesis and refinement of 2 , 3 - dichlorobenzaldenyde aredescribed in this thesis . by the new refinement the total receipt rate is raised from 32 . 6 % to 45 %
文摘:介绍了2 ， 3 -二氯苯甲醛的合成及提纯方法，采用新的提纯方法，可使总收率由文献值32 6提高到45 。 |
| 7. | Results and conclusion linezolid was successfully synthesized in a total yield of 43 . 2 % with the advantages of low cost and simple processing in comparison with the reported yield of 11 . 3 %
结果与结论成功地合成出利奈唑酮，总收率由文献的11 . 3 %提高到43 . 2 % ，而且操作简单，成本低廉。 |
| 8. | High performance liquid chromatography ( hplc ) analysis shows that the purity of the synthesized product could amount to 98 . 6 % and the total yield rate was 42 . 5 % with the melting point of 161 ~ 164
运用高效液相色谱仪对合成的劳拉西泮进行了定性和纯度分析，纯度可达98 . 6 % ，熔点为161 ~ 164 ，反应总收率为42 . 5 % 。 |
| 9. | Using sodium dicyandiamide and saccharin as raw materials , tribenuron - methyl is synthesized via ring - opening reaction , phosgenation and condensation with total yield of 57 . 0 % and product purity of 95 . 6 %
以双氰胺钠和糖精为起始原料，经过开环、光气化、缩合等一系列反应制备了苯磺隆，合成反应的总收率可达57 . 0 %以上，纯度可达95 . 6 %以上。 |
| 10. | The paper introduces a new highly - effective synthesis method . decoquinate was synthesized with catechol as starting materials via substitution , reduction , and at last cyclization with " dowtherm a " as solvent
摘要以邻苯二酚为原料，通过一系列取代反应，再经过还原、缩合，最后在高沸点的混合有机溶剂中关环。制备的3 -喹啉羧酸乙酯衍生物的总收率为24 . 2 % 。 |
