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- Keywords IR spectroscopy;keto enol tautomerism;reaction mechanism; 红外光谱;互变异构;反应历程;
- keto enol tautomerism 酮 烯醇互变异构
- "The keto form predominates in many aldehydes and ketones, the enol form in ph enol s. 在许多醛和酮中酮基都是最主要的组分。
- Density Functional Theory, Cytosine, Tautomerism. 密度泛函理论;胞嘧啶;
- Reaction of Dianion 8 with 4 To Form 7 and Enol 10. 反应形成酸根84710和烯醇.
- Aqueous PUA dispersion based on aromatic isocyanate was prepared with blocked prepolymer.The blocking agent with enol keto stucture( BAEK) .diethyl malonate( DEM) , was used to prepare the dispersion. 采用具有烯醇结构的封端剂,用反应活性较高的芳香族异氰酸酯制备了聚氨酯-丙烯酸酯(PUA)水分散液。
- 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。
- Keywords Ethyl acetoacetate Enol Keto UV; 乙酰乙酸乙酯;烯醇式;酮式;紫外光谱;
- The New Synthesis of Enol Phosphate Phosphorus, Sulfur, Silcon 1996, 118, 113. 应用固－液相转移方法合成肌醇磷酸酯化学学报1994，53，305.
- The New Synthesis of Enol Phosphate Phosphorus, Sulfur, Silcon 1996，118，113. 应用固-液相转移方法合成肌醇磷酸酯化学学报1994，53，305.
- This complex reaction is characterized by a keto-enol tautomerism eqilibrium and ester exchange reaction. 此螯合反应是由酮一烯醇互变异构平衡过程和酯交换反应组成。
- enol keto tautomerism 烯醇 酮互变异构现象
- "The keto form predominates in many aldehydes and ketones, the enol form in phenols. Sugars (e.g., glucose) exhibit tautomerism Between open (chain) forms and closed (ring) forms. See also isomerism. " 在许多醛和酮中酮基都是最主要的组分。烯醇基则组成酚。糖类(如葡萄糖)中有开放(链)式与闭合(环)式之间的互变异构。
- Keto-enol tautomerism is the most common tautomery phenomenon.Keto -enol themselves are the real chemical substance. 酮及烯醇互变是互变作用最普通的现象,它们都是真实的化学实体。
- Similarly, using diketene to replace mixed anhydride or acid chloride, intermediate enol 5 may be obtained. 而由混合酸酐或双烯酮代替酰氯，中间体也可能是烯酮或烯醇5。
- "Constitutional isomers that can be readily converted from one to another are called tautomers (see tautomerism). 彼此间很容易相互转换的组成异构体称为互变异构体现象。
- Metal salts and Carboxy, keto, aldehyde, acetoacetoxy, complexes phosphonic acid, imine, amino and thio. 金属盐类和羧基，酮，醛，乙酰乙酸，配合膦酸，亚胺，氨基酸和硫代。
- Studies of the UV-VIS spectra of them in several acid solutions indicate the quinone-ammoni-um tautomerism. 在一定的酸性介质中，这类冠醚存在着铵琨互变异构，测定了它们在不同介质中的紫外-可见光谱，并对最大吸收峰进行归属。
- Cyclic carbonate, Amine aldehyde, keto, activated olefinic bond, N-alkoyl, acid, anydride, acid chloride, acetoacetoxy. 环碳酸酯，胺醛，酮，活性烯键的N alkoyl，酸，anydride，酰氯，乙酰乙酸。
- Calculations are performed for the enol and keton isomers of acetylacetone by quantum CNDO/2project in this paper. 本文应用半经验的CNDO/2方案对乙酰丙酮的两种不同异构体进行了量子化学计算。
