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yield up
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  收率
    Results indicated that the purity is 94.67% with the yield up to 68%.
    由高效液相法测得纯度为94.67%,收率达到68%。
短句来源
    2-chloro-5-methylpyridine was chloridized with sulfuryl chloride and initiated with azobisisobutyronitrile to produce 2-chloro-5-chloromethylpyridine, that has a yield up to 65.9%.
    以2-氯-5-甲基吡啶为起始原料,以硫酰氯为氯化剂、偶氮二异丁腈为引发剂制备2-氯-5-氯甲基吡啶。 反应收率65.9%。
短句来源
    Isopropanol reacted with chloroacetic acid in the presence of PVC-FeCl3 to yield. isopropyl chloroacetate. Thus a mixture of 0.10 mol chlorcacetic acid, 0.25 mol (20ml) isopropanol, 15 ml cyclohexane and 2.5 g catalyst were heated for 2.5 h at refluxing temperature, with yield up to 80%.
    将聚氯乙烯-三氯化铁树酯首次作为催化剂用于氯乙酸和异丙醇的酯化反应中,当0.10mol氯乙酸,0.25mol异丙醇,15ml环己烷和2.5g催化剂一起回流分水2.5h,产品收率达80%。
短句来源
    A new method in which lactic acid was oxidized by liquid phase catalysis and selectively converted to pyruvic acid with yield up to 58. 2% was introduced.
    采用液相催化氧化乳酸,乳酸选择性地转化为丙酮酸的新方法,丙酮酸收率可达58.2%。
短句来源
    After adopted procedure the yield up to 90% and cost reduce 20 yuan/mg.
    采用此工艺后收率提高到90%,成本下降20元/公斤。
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  “yield up”译为未确定词的双语例句
    Efficient enantioselective catalysis of aldol reactions of various benzaldehydes with acetone in excess of acetone as the solvent was achieved with high yield up to 91.0% and good selectivities (up to 88.5% ee) by using 5 mol% of the catalyst 5.
    以过量的丙酮作溶剂, 使用5 mol%该催化剂, 有效地催化了多种取代苯甲醛与丙酮间的不对称羟醛反应, 产率最高达91.0%, ee 最高达88.5%。
短句来源
    This compound efficiently catalyzed the direct asymmetric aldol reaction with the yield up to 90.0% and enantiomeric excess up to 89.5%.
    该化合物对映选择性催化直接羟醛反应,产率最高达到90.0%,对映体过量最高达89.5。
短句来源
    Introducing Ga species into HZSM-5 can enhance the yield of aromatics, from 36.2% on HZSM-5 to 44.7% on GaHZSM-5. Adding the second modifier such as Zn can further enhance aromatics yield up to 49.9%.
    添加改性物Ga可以使芳烃选择性由HZSM-5上的36.2%增加至GaHZSM-5上的44.7%。 添加适当的第二改性物如Zn、Cu、P、Ti可进一步改善产物的芳烃选择性,最高可达49.9%。
短句来源
    Application of CB 11/CB 8 two stage process in industrial plant has been successful with octane number and liquid product yield up to the requirement of design.
    本文通过 CB- 1 1 /CB- 8的两段装填在工业上的应用 ,并通过两次满负荷的标定 ,证明 CB- 1 1 /CB- 8组合工艺在工业装置上的应用取得成功。
短句来源
    Experimental results indicated that the optimum conditions of esterification reaction are the molar ratio of o-phthalic acid, n-butyl alcohol and sodium hydrogen sulfate 1:2. 6:0. 22, the reaction time 1. 5 h,and the yield up to 94.24%.
    实验结果表明:酯化反应的优化条件为邻苯二甲酸、正丁醇、硫酸氢钠物质的量比为1:2.6:0.22,反应时间1.5h。 产率可达94.24%。
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  yield up
The RNA-1 components of all three viruses were translated to yield polyproteins of Mr 250k, which were autocatalytically processed to yield up to five cleavage products.
      
Unsaturated 1-pyrazoline3 obtained from diazocyclopropane and norbornadiene decomposes at 330-370°C with elimination of cyclopentadiene to give 3(5)-vinylpyrazole in a yield up to 75%.
      
Salts of 2-halosubstituted 1,3-diketones form more highly enolized cyclic 1,3-diketones - 1,3-cyclohexanedione and dimedone under analogous conditions, with a yield up to 90%.
      
In the presence of a mediator (sodium iodide) acetylacetone dimerizes with the formation of 3,4-diacetylhexane-2,5-dione, with a yield up to 90%.
      
The formation of a certain conformation of the DHDP chain produced by the central atom of the metal complex-former permits the asymmetric synthesis of N-acetylphenylalanylmethionine with the optical yield up to 40%.
      
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Sucrose polyfatty acid esters(SPE)have proved to be a low-caloriediet and agent for lowering plasma cholesterol.A solvent-free reaction system isdescribed for synthesizing SPE and mannitol polystearic acid esters by transeste-rification of sucrose or mannitol with ethyl stearate according to modifiedRizzi's method.The process was carried out in one pot by a two-stage reactionin the presence of potassium soap as a solubilizer,Na-K alloy proved to be a goodcatalyst to afford a yield up to 95% based on sucrose.The...

Sucrose polyfatty acid esters(SPE)have proved to be a low-caloriediet and agent for lowering plasma cholesterol.A solvent-free reaction system isdescribed for synthesizing SPE and mannitol polystearic acid esters by transeste-rification of sucrose or mannitol with ethyl stearate according to modifiedRizzi's method.The process was carried out in one pot by a two-stage reactionin the presence of potassium soap as a solubilizer,Na-K alloy proved to be a goodcatalyst to afford a yield up to 95% based on sucrose.The composition of SPEwas estimated by HPLC.Some aspects of this reaction have been discussed.

在 Rizzi 无溶剂合成法的基础上,于蔗糖、硬脂酸乙酯和皂的混合物中,以 Na-K 齐为催化剂来合成蔗糖多硬脂酸酯,当催化剂用量为第一阶段反应物总量的0.7~1.2%(w/w)时,产率93~96%,取代度n=6~8。同法可合成甘露醇多硬脂酸酯。蔗糖多酯能降低对人体有害的低密度脂蛋白,用于治疗高胆固醇血症。

The extraction and isolation of Midecarnycin experiments have been carried out with macroreticular resin adsorbent CAD-45. The yield up to 84.8% was achieved with our procedure. It was found that factors such as flow rate, pH of elution and eluant would affect the extraction efficiency.The experiment showed that the pH value was maintained at 8.3- 8.5; flow rate 1 / 6 ml/min; before eluation. The column was washed with 1% NH4OH 1 : 1 (V/V); an optimal eluate solvent was found to be butylacetate to obtain...

The extraction and isolation of Midecarnycin experiments have been carried out with macroreticular resin adsorbent CAD-45. The yield up to 84.8% was achieved with our procedure. It was found that factors such as flow rate, pH of elution and eluant would affect the extraction efficiency.The experiment showed that the pH value was maintained at 8.3- 8.5; flow rate 1 / 6 ml/min; before eluation. The column was washed with 1% NH4OH 1 : 1 (V/V); an optimal eluate solvent was found to be butylacetate to obtain satisfactory results. An isolation technique of Midecamycin was thus established.

用国产非离子型大孔网状树脂CAD—45吸附提取麦迪霉素,取代了传统的溶媒萃取法。试验确定了提取工艺条件:吸附最佳pH为8.38~8.5,流速为1/6ml/min;解吸前先用1%氨水1:1(V/V)洗柱;最佳解吸剂为醋酸丁酯,流速为1/12 ml/min。收率可达84.8%。

N,N-dimethylhydrazine is synthesised via the reactions of ammonia, hypochloride and dimethylamine, with the yield up to 87%, higher than the known reports in published articles , and the influential factors are discussed.

研究了氨一次氯酸钠法合成偏二甲肼的反应,探索出本合成法的最佳反应条件,收率达87%。对影响因素进行了初步讨论。

 
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