烯醇
- 与 烯醇 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The selective response of Holotrichia oblita to different plant volatiles (1) By steam distillation and dichloromethane, in the Y-tube olfactometer bioassay, the crude extract from castor-oil plant leaves was obviously attractive to female and male of Holotrichia oblita than cotton, Abutilon theophrasti Medic, control dichloromethane.
该结果表明,蓖麻叶片粗提物中含有引诱华北大黑鳃金龟的化学物质。(2)华北大黑鳃金龟成虫对8种化合物的嗅觉仪行为反应结果表明,无论对雌虫还是雄虫,肉桂醛、邻苯二甲酸二丁酯、苯酚、香草醛、苯甲醛的诱虫活性显著高于顺-3-己烯醇。
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Such investigation provides a possible way for one-pot synthesis of 1, 4-butanediol fiom allyl alcohol on industrial scale.
为工业上由丙烯醇一步合成1,4-丁二醇提供了一条可能的新途径。
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The industrial synthesis of 1, 4-butanediol from allyl alcohol involves two steps with low yield and selectivity.
目前工业上都是采用两步法由丙烯醇生产1,4-丁二醇,效率低,选择性差。
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The critical micelle concentration, surface tension and interfacial tension of a copolymer are investigated.
对具有一定表面活性的聚乙烯醇与丙烯酸甲酯和丙烯酸聚乙二烯醇共聚产物的临界胶束浓度,表面张力和界面张力进行了研究,并对共聚物与OP系列低分子表面活性剂的相互作用进行了探讨。
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In poly the chain scission is based on the ozone oxidation of the alcoholic groups of PVAL with formation of ketone groups which in turn are the source of a ketoeenol tautomerism which leads to random chain scission by further ozone attack.
聚乙烯醇的乙醇基在臭氧的氧化作用下形成酮基,并依次成为酮烯醇互变异构现象的源头,在臭氧的进一步攻击下导致链无规则断裂,从而产生断链作用。
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The addition of 1 % Z- 11 - 16: OH to binary or trinary mixture may reduce catches,while addition of 5 % Z- 11 - 16: OH reduced catches singnificantly.
增加1%顺-11-十六碳烯醇到二元或三元混合物中减少诱蛾量,当增加5%顺-11-十六碳醇时诱蛾量大量减少。
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The synthetic route of glycidyl nitrate was improved. Glycidol was synthesized by the cyclization process from allyl alcohol and m-CPBA, then glycidyl nitrate was synthesized with glycidol as raw materials and HNO3/ 2O as nitrating agent.
为了改进缩水甘油醚硝酸酯的合成路线,以丙烯醇为原料,经间氯过苯甲酸环氧化后得到缩水甘油醇,然后GA经硝酸/醋酐硝化后得到了GN,硝化产物GN的收率为70.2%,经过减压精馏后GN的纯度达到了98.9%。
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At last,a convergent and general protocol to marine natural product,as demonstrated by the enantioselective total synthesis of malyngamides O,P,Q,R, 5"-epi-Q and 5"-epi-R bearing terminal vinylic chloride structure,was developed in detail.E,(7S)-7-methoxytetradec-4-enoic acid was prepared using the above described Johnson-Clainsen rearrangement,the terminal vinyl chloride was constructed using Wittig reaction as key step,the pyrrolidone derivative was constructed using L-serine as natural chiral pool.Starting from the synthesis of malyngamides O and P to explore the general route,an aldol reaction of methyl acetate with the vinyl chloride part in the presence of LDA gave the skeleton of amine portion,followed by amidation with the fatty acid finished the synthesis of malyngamide P.
先以malyngamides O和P为试点探索通用合成路线,将乙酸甲酯和烯氯部分在LDA存在下进行aldol反应得到氨部分的骨架,再将手性不饱和脂肪酸和氨部分进行酰胺化反应完成了malyngamide P的合成,将P在碱性条件下进行烯醇甲基化反应完成了malyngamide O的全合成。
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Head blight not only causes the severe grain yield loss, but also causes the harvested grain contaminated with several mycotoxins, such as deoxynivalenol and zearalenone. The consumption of food product made from grains contaminated with these toxins is a potential problem for human and farm animals, which is known to cause carcinogenic, genotoxic acute or chronic diseases or to directly target the kidney, liver or immune system, and has caused great concern of food safety.
赤霉菌引起小麦的穗腐,不仅使小麦籽粒产量降低、品质变劣,而且病麦粒中存留有病菌产生的真菌毒素,如脱氧雪腐镰刀菌烯醇(Deoxynivalenol,DON)和玉米赤霉烯酮(Zearalenone,ZEN),食用污染毒素的病麦及其制成品后会引起人畜中毒,还有致癌、致畸和诱变的作用。
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A series of β-vinyl alcohols were synthesized using methyl alkyl ketones or methyl aryl ketones and allyl chloride as starting materials by Grignard reagent method.
以烯丙基氯和甲基酮为原料,通过格氏试剂法合成了-β烯醇化合物,并探讨了各种因素对收率的影响,获得了控制反应过程的最佳参数。
- 推荐网络例句
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Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.
Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。
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I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.
我来只是现在,'歼灭战perfuming自己与胡努特,那麼,他来到和SAT 。
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The shamrock is the symbol of Ireland and of St.
三叶草是爱尔兰和圣特里克节的标志同时它的寓意是带来幸运。3片心形叶子围绕着一根断茎,深绿色。