总收率

基本解释 (translations)

TY

词组短语

total recovery

与总收率相关的网络例句 [注：此内容来源于网络，仅供参考]

The optimum reaction conditions are as follows: diphenylmethanethiol : methyl chloroacetate is 1:1.5, and the reaction carried out at 100℃ for 4 h, 2- acetamide can be carried out in the room temperature for 20 h, the yield of 2- acetamide was 76%, hydrogen dioxide: 2- acetamide is 1:1, and the reaction carried out at 60℃ for 3 h, the yield of modafinil was 79%, the total yield of reaction can be reached 48%.

研究表明，采用氯乙酸甲酯作为醚化试剂，反应时间4h，反应温度100℃，二苯甲硫醇：氯乙酸甲酯=1：1.5，室温下氨解反应20h，二苯甲硫乙酰胺收率76%；采用过氧化氢作为氧化试剂，反应时间3h，反应温度60℃，过氧化氢：二苯甲硫乙酰胺=1：l，莫达非尼收率79%，反应总收率可达48%。

The total amount of cyclohexanone and cyclohexanol first was increased and was decreased with an increase of the reduction degree, A maximum is obtained over the 50% reduced PAn (5.5%).

随着聚苯胺催化剂还原度的增加，醇酮的总收率是先上升后下降的，在50%还原的催化剂上得到最大收率(5.5%)。

A better understanding of the role of PPAR in insulin action system will be critical in developing more efficacious and safe agent s that act on PPAR and benefit patients with type 2 diabetes. The main content is followed: Synthesis and analysis of 1,3-dicarbonyl compounds. Make use of easily available cheap reagent such as 2-naphthol, 6-hydroxyquinoline, 1,2-dibromoethane, 4- hydroxybenzaldehyde, dimethyl malonate, 2-{4- [(2-napthoxy)ethoxyl] benzyl} malonates and 2-{4 [(1,2,3,4-tetrahydro-6 -quinolinoxy)ethoxyl] benzyl } malonates were synthesized through 6-8 steps in virtue of Williamson, Knoevenagel reaction, Pd/C catalyzed hydrogenation with mild conditions and high yield. The total yield of 40-50%.

本论文的主要内容和研究结果如下： 1，3-二羰基类化合物的合成及分析，采用2-萘酚、6-羟基喹啉、1 ，2二溴乙烷、对羟基苯甲醛、丙二酸二甲酯等常见易得试剂，利用Williamson反应、Knoevenagel反应、钯碳加氢等条件温和且收率高的方法，分别合成了2-{4- [(2-萘氧)乙氧基]苄基}丙二酸衍生物和2-{4 [(1，2，3，4-四氢-6-喹啉氧基)乙氧基]苄基}丙二酸衍生物两个系列8个化合物，经6-8步反应，总收率为40-50%，具有一定绿色化学特性。

Furthermore, a biogenesis-based synthesis of CET was developed, which realized the plausible biogenetic transformation by a transannular reductive skeletal rearrangement of cyclic amino enone 45 to key ring skeleton of CET under mild condition directly.

化合物17经Wacker氧化、环化得到重排前体不饱和酮45，45在温和的还原条件下重排得到三尖杉碱五环骨架化合物34，从而实现了三尖杉碱的全合成。第二条路线较前一条步骤更短，合成更方便，收率更高（从二酯化合物8计合成三尖杉碱的总收率可达10％）。

The one time yield of potassium sulphate can reach 85.26% and the total yield approaches 100%.

实验结果为：硫酸钾的单次收率达到85.26%，循环总收率接近100%。

Moreover, the effects of the molar ratios of the reagents on the yield are examined. The best molar ratios are a 2.0 molar equivalence of thionyl chloride and a 3.0 molar equivalence of paminophenol to retinoic acid, and the total yield is 80.7%.

此外，研究了反应试剂的摩尔比对反应收率的影响，最佳摩尔比为二氯亚砜和对氨基苯酚物质的量分别是维甲酸物质的量的2倍和3倍，总收率为80.7%。

For the synthesis reaction of chalcone, cyclohexanone aldolization and biodiesel,γ-Al_2O_3-NaOH-Na solid superacid has a satisfactory catalytic activity. With hypnone and phenylaldehyde as raw material, amount of catalyst 7.5% wt% of material, mole ratio of hypnone and phenylaldehyde 1:1.1, reaction temperature 40℃, after 3 hours, the yield of chalcone can be up to 96.88%. With cyclohexanone as raw material, amount of catalyst 10% wt% of material, reaction temperature 190℃, after 3 hours, dimmer of cyclohexanone can be up to 85.66%.

将该固体超强碱催化剂应用于查尔酮、环己酮自缩合以及生物柴油的合成反应中，该改性固体超强碱催化剂表现出了良好的催化活性：以苯乙酮和苯甲醛为原料，反应温度为40℃，催化剂用量为反应物总质量的7.5％，苯甲醛与苯乙酮摩尔比为1：1.1，反应3h查尔酮产率可达96.88％；以环已酮为原料，催化剂用量为原料总质量的10％，反应温度为190℃，反应3h，二聚物的总收率可达85.66％；以动物油和甲醇为原料，醇油摩尔为9：1，催化剂用量为动物油质量的2％，反应温度为70℃，反应3h后，生物柴油的收率可达91.8％。

From the development of methane chloridate production, the early methane chloridate were mainly produced by methane chlorination, with the rapid development of methanol industry, the advantage of methanol hydrochlorinate become clearer and clearer and the methanol hydrochlorinate will take the place of methane chlorination in the world.

甲醇氢氯化法包括甲醇氢氯化反应生成一氯甲烷和一氯甲烷氯化生成多氯甲烷两步。按国外先进水平，该法甲醇总收率可达97.7％，氯总收率可达98.6％。从世界甲烷氯化物生产的发展来看，早期的甲烷氯化物生产是以甲烷热氯化法为主。

Two synthetic routes of Caffeine have been determined and investigated after the analyzing and trying for the literal synthetic methods. In one route, the target compound was prepared from chloroacetyl chloride through six steps, the total yield is 50.5 %. In another route, the target compound was obtained from cyanoacetic acid through six steps, the total yield is 45%.

对目前咖啡因工业生产工艺进行了研究，并分析了咖啡因工业生产中所存在的问题，本文提出两条可行的工业化合成路线：一条是以氯乙酰氯为起始原料，经过六步反应制得目标化合物，总收率50.5％；另一条是以氰基乙酸为起始原料经过六步反应制得目标化合物，总收率45％。

The result of above three aspects indicates:(1) under these optimize conditions,the yield of nitrating reaction is 95.52%, the yield of phase transfer catalysis fluorination is 90.03%, the yield of chlorination is 87.5%,and the reaction total yield is 75.47%, which are higher than the yields reported, the purity of product is 98.5%.

上述研究结果表明：(1)在实验所得的工艺条件下，硝化收率为95.52%，相转移催化收率为90.3%，氯化收率为87.5%，反应总收率达到75.47%，产品纯度为98.5%，均高于文献所报导收率。