enol

1. We have already met one series of specific enol equivalents.
   我们已经遇到过一系列有特效的烯醇等当物。
2. The crystal structure analysis of photocolored product showed that the photochromic phenomenon was due to photoisomerization from enol form to keto form.
   结构分析表明：其光致变色现象是由于它在溶剂与光的共同作用下发生了从醇式到酮式的异构化。
3. Theoretical Studies on Isomerization Mechanism between Ketone and Enol Compounds Assisted by Water Molecules
   水助酮和烯醇类化合物互变异构反应机理的理论研究
4. The Co2 ( CO) 8 catalyzed reaction of pentafluorostyrene with triethylsilane and carbon monoxide gives a perfluorophenyl enol silyl ether as a mixture of regio-and stereo-isomers.
   五氟苯乙烯与三乙基硅烷、一氧化碳在八羰基钴催化下反应得一个位置和立体异体（五氟苯基烯基硅醚）的混和物。
5. The keto form predominates in many aldehydes and ketones, the enol form in phenols.
   在许多醛和酮中酮基都是最主要的组分。
6. It does not make any sense that trying to separate the tautomers of enol and ketone.
   一化合物，在溶液中存在酮式与烯醇式互变异构体，普通液相柱中能否分开？
7. Under UV-irradiation, the absorption of enol form decreases, whereas ketone form increases with increasing irradiation time.
   当以紫外光进行辐照时，烯醇式异构体不断减少，酮式的含量则不断增多。
8. Some isoquinolinium salts are able to react with a wide variety of cyclic enol ethers and cyclic vinyl ethers in Diels-Alder reaction, this is an effective way to form fused ring compounds.
   异喹啉盐可与不同结构的环烯醚及环烯醇醚进行Diels-Alder环加成反应，这是合成稠环化合物的有效途径。
9. Synthesis of 1,2,3,4-Tetrahydroquinolines by Iodine-Catalyzed Cascade Reaction of Anilines with Cyclic Enol Ethers
   苯胺与环烯醚的串联反应合成1,2,3,4-四氢喹啉
10. Ketone-enol tautomerism was observed.
    观测到了酮-烯醇互变异构现象。
11. Studies on bioactives of spiro enol ether analogues
    茼蒿素类似物对几种害虫的生物活性研究
12. CONCLUSION: The method can be used to determine the content of some enol form structure compound.
    结论：pH滴定法可用于一些烯醇式结构化合物的含量测定。
13. The relative content of enol form on the different condition is analysed in this paper.
    本文就不同条件下烯醇式的互变异构的相对含量作一分析。
14. The results showed that two aromatic β-diketone compounds existed in the enol form in chloroform, and they were kinds of good UV-A ultraviolet absorbents in UV region from 320 to 400 nm.
    这两种β-二酮化合物在氯仿溶液中主要以烯醇形式存在，并在320~400nm的紫外光区具有强烈的特征吸收，故是一类良好的UV-A紫外线吸收剂。
15. The relative reaction rate of adding dichlorocarbene to enol phosphates was studied.
    在与二氯卡宾加成反应中，我们还研究了它们之间的相对反应速率。
16. Preparation of dimethylsilyl bis-enol ethers
    二甲基硅基双烯醇醚的制备
17. Study on the reactions of trimethylsilyl enol ethers from aldehydes and ketones with acyl chlorides
    醛和酮的烯醇三甲基硅醚与酰氯反应的研究
18. Synthesis of trimethylsilyl enol ethers from aldehydes
    由醛合成三甲硅基烯醇醚
19. The Reaction of Silyl Enol Ether of Conjugated Ketones with Perfluoroalkyl Iodide
    具有共轭体系的酮类烯醇硅醚与全氟碘代烷的反应
20. The results indicate that β-diketones exist only in the enol form.
    结果表明，这些β－二酮仅以烯醇式存在。
21. Oxido-Rearrangement of Silyl Enol Ethers of Flavanones to Isoflavones
    黄烷酮烯醇硅醚氧化重排成异黄酮
22. The reaction reactivity and stereoselectivity of the two enol ester reaction with aryl Grignard reagents were compared.
    研究了金属镁格氏试剂分别与两种烯醇酯的反应活性和立体选择性。
23. The influence of tautomerism ( enol and keto) of DKAs, molecular field, charge, alignment rules and other factors on the CoMFA model were considered.
    在模型的构建过程中，考虑了二酮酸类化合物的互变异构现象（酮式和烯醇式）、分子场、电荷以及叠合方式等因素对CoMFA模型的影响。
24. Based on the data we got, we believed that there should be a third resonant structure of the reaction intermediate hydroxyethyl thiamine pyrophosphate ( HEThDP) besides the reported enamine resonant structure and C2-a-alkenyl carbanion resonant structure, which might be named enol resonant structure.
    根据我们得到的数据，我们认为其重要的反应中间体羟乙基硫胺素焦磷酸（HEThDP）除文献报道的烯铵结构和C2α-碳负离子结构之外，还存在第三种共振结构，即烯醇式结构。
25. The main component of volatile oil in Qingshui town: Benzene phthalate butene, Z-ligustilide, different key enol Eucalyptus oil, 6-diene butyl 1,4-cycloheptane, and the relative percentage of 66.8%.
    清水镇当归挥发油的主要成分为丁烯基苯酞、Z-藁本内酯、异匙叶桉油烯醇、6-丁基-1,4环庚二烯，其相对百分含量为66.8%。
26. This tandem reaction proceeds in high efficiency through nucleophilic addition, silyl enol ether formation, substitution, reduction, and intramolecular nucleophilic cyclization.
    该串联反应包含了亲核加成、烯醇硅醚的形成、取代还原以及分子内的环化反应。

noun

1. an organic compound that contains a hydroxyl group bonded to a carbon atom which in turn is doubly bonded to another carbon atom