• The overall yield reached 84.6%.

    三步反应总收率达到84.6%。

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  • Results: The overall yield was 42.9%.

    结果:盐酸布比卡因合成总收率为42.9%。

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  • The synthetic route for the 25% overall yield.

    本合成路线总收率为25%。

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  • RESULTS the overall yield was 88% with the improved process.

    结果通过改进工艺制得4,7 -二氯喹啉总收率88%。

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  • Results: Benorilate was synthesized with an overall yield of 95%.

    结果:合成了贝诺酯,总收率为95%。

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  • The overall yield was 55%, the purity of the product reached 99%.

    最终产品总收率为55%,产品纯度为99%以上。

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  • Control and implementation of daily production reports to improve overall yield;

    每日生产报告的控制及执行,以提高综合产出率;

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  • RESULTS the overall yield was 95.4%, the title compound was characterized by IR and elemental analysis.

    结果总收率达95.4%,目标化合物的结构经红外光谱和元素分析确证。

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  • Results: We successfully improved the synthesis technology of zolmitriptan with an overall yield of 16%.

    结果:改进了佐米曲普坦的合成工艺,总收率提高至16%。

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  • Etiracetam was synthesized from 2-pyrrolidone by N-alkylation and aminolysis. The overall yield was 42.6%.

    吡咯烷酮经N烷基化、氨解反应合成了乙拉西坦,总收率42.6%。

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  • Ethopabate is prepared via esterification, acylation and alkylation from p-aminosalicylic acid in87.4% overall yield.

    以对氨基水杨酸为原料,经酯化、酰化和烃化反应得乙氧苯酯,总收率为87.4%。

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  • Results and conclusion The target compound was identified by IR, 1H-NMR, MS and elemental analysis, the overall yield is 24.9%.

    结果与结论罗库溴铵的结构经红外光谱、核磁共振氢谱、质谱、元素分析确证,总收率达24.9%。

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  • The production shows that there is no shrinkage, blowhole and inclusion in the casting, the overall yield of the casting is 95%.

    生产结果表明,铸件无缩孔、气孔、夹渣缺陷,铸件工艺出品率95%。

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  • If the bond was purchased at a premium (above par), then your overall yield to maturity will be lower than your stated coupon rate.

    如果债券溢价(高于票面价值)购买的,那么你的整体到期收益率将低于您说的票面利率。

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  • Adapalene was synthesized from 4-bromophenol by alkylation, etherification, condensation and hydrolysis with an overall yield of 51%.

    对溴苯酚经烷基化、硫酸二甲酯醚化、缩合及水解反应制得阿达帕林,总收率51%。

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  • We prepared 6.58mg soluble MGL from 1L shake-flask culture with higher activity, with a 41.1% overall yield in the purification process.

    活性测定显示可溶性MGL具有较高活性,每升发酵菌液可以制备6.58毫克可溶性MGL,纯化回收率达到41.1%。

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  • The improved synthesis reduced the process steps, the overall yield was 51.6%. This synthetic route is suitable for industrial manufacture.

    该工艺路线缩短了反应步骤,总收率达51.6%,适合工业化生产。

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  • Levocetirizine Dihydrochloride was prepared from benzoyl chloride by acidylation, hydrogenation, cyclization with an overall yield of 8.05%.

    以苯甲酰氯为原料,经酰化,还原,环合等反应合成左旋西替利嗪盐酸盐,反应总收率为8.05%。

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  • RESULTS and CONCLUSION The overall yield was 26%. The reaction condition was mild, easy to operate. Adapted to industrialization production.

    结果及结论该实验方法总收率26%,反应条件温和,操作简便,适合工业化生产。

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  • Clarithromycin was prepared from erythromycin a through oximation, protection, methylation and deprotection. The overall yield of clarithromycin was 40%.

    红霉素碱经肟化、保护再经甲基化、脱保护得到克拉霉素,总收率达40 %以上。

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  • Fluticason propionate(1) in overall yield of 60.1% was synthesized from Flumethasone by oxidation, esterification, acylation, alcoholysis and fluoromethylation.

    以双氟美松为原料,经氧化、酯化、酰化、醇解和氟甲基化反应制得氟替卡松丙酸酯(1),总收率60。

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  • Moclobelide was synthesized from ethanolamine by nucleophilic substitution and Schotten-Baumann reaction, followed by condensation with an overall yield of 71.2%.

    以乙醇胺为起始原料,经亲核取代、肖特一鲍曼反应和缩合反应制得吗氯贝胺,总收率可达71.2%。

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  • The 3,4,5 trimethoxybenzaldehyde is synthesized from p cresol in four steps of bromination, hydrolyzation, methoxylation, and methylation, with an overall yield of 53.

    以对甲酚为原料经溴化、水解、甲氧基化和甲基化4步反应合成药物中间体3,4,5-三甲氧基苯甲醛,总收率达53。

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  • The soluble salt in water of Dimetridazole was synthesized with more than 95% overall yield by a simple and convenient method. This method was convenient to industrialize.

    本文报道以简便易行的方法合成水溶性二甲硝咪唑盐,收率高达95%以上,具工业化应用价值。

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  • According to analyzing and testing, the overall yield is up to above 75 percent by changing traditional foundry process about gear of steel casting. The benefit is obvious.

    经分析和试验,改变了传统铸钢齿轮铸造工艺方法,平均工艺出品率达到75%以上,取得明显的经济效益。

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  • Aripiprazole in overall yield of 68% was synthesized from 2, 3-dichloroaniline by a three-step nucleophilic substitution reaction in yield of 83%, 91% and 90%, respectively.

    以2,3 -二氯苯胺为原料,经3步亲核取代反应合成了阿立哌唑。3步反应的收率分别为83%,91%和90%;总收率68%。

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  • The stavudine was prepared from 5-methyluridine via six steps in 34% overall yield, in which the key step is the selective acylation of 5-methyluridine by propionyl chloride.

    该路线以5-甲基尿苷为起始原料,关键步骤是5-甲基尿苷和丙酰氯的选择性酰化反应,六步反应总收率为34%。

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  • Celecoxib as a cyclooxygenase-2 inhibitor, was synthesized from p-methylacetophenone and ethyl trifluoroacetate by successively condensation and cyclization in 67% overall yield.

    以对甲苯乙酮和三氟醋酸乙酯为原料,经缩合、环合两步反应得到2型环氧酶抑制剂赛来昔布,总收率为6 7%。

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  • Celecoxib as a cyclooxygenase-2 inhibitor, was synthesized from p-methylacetophenone and ethyl trifluoroacetate by successively condensation and cyclization in 67% overall yield.

    以对甲苯乙酮和三氟醋酸乙酯为原料,经缩合、环合两步反应得到2型环氧酶抑制剂赛来昔布,总收率为6 7%。

    youdao

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