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- Density Functional Theory, Cytosine, Tautomerism. 密度泛函理论;胞嘧啶;
- 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。
- Fog in such supersensitized emulsions, which are prone to enamine dye-produced fog, can be reduced by employing an azaindene in the emulsion. 这些超增感乳剂中的灰雾，可能是由形成的烯胺染料引起的，并且这种灰雾，可采用向乳剂中加入氮茚来降低。
- Hydroxycyclohexaneacetic acid lactone,a new prefume,has been synth esized from cyclohexanone via enamine reaction,NaBH4 reduction and lacyonization . 本文以环己酮为原料通过烯胺反应、还原反应以及内酯化反应合成了新型香料2-羟基环己烷乙酸内酯。
- 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。
- "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。
- 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。
- Semiempirical MNDO ealculations were performed in order to study theformhydroxamic acid-formhydroximic acid tautomerism. 应用半经验MNDO方法研究了甲异羟肟酸与甲羟肟酸的互变异构平衡。
- The meso carbon atom of the methine linkage of the dye is attached to the nitrogen atom of a group which forms an enamine with the methine linkage of the dye. 该染料甲川链上的碳原子与氨基的氮原子相连，而该氮原子又与染料的甲川链形成烯胺。
- Ketimine,which is prepared by acetone and ethylene diamine or hexamethylene diamine was used as potential chain extender to improve the properties of aqueous polyurethane resin. 用丙酮分别和乙二胺、己二胺反应制备酮亚胺,并以其作为潜伏性扩链剂改善水性聚氨酯(PU)的性能。
- When the tautomer DTP(1,3,7) reacts with the electrophilic carcinogen BPDE,the atomic S10 of DTP(1,3,7) superiorly attacks the BPDE. 二硫酮DTP(1;3;7)在水相中与致癌物BPDE进行亲核取代反应时;二硫酮DTP(1;3;7)中的S10原子优先进攻亲电试剂BPDE.
- Instead, ESIPT takes place, forming a proton transfer tautomer, in which the central nitrogen atom acts as the secondary alkyl amine. 非光缓解途经可分为物理性质的由光能转为热能散失在系统中，或是化学性质的由光能转为化学能进行化学反应；
- Tautomerism: Existence of two or more chemical compounds that have the same chemical composition But different structures (isomers) and that convert easily from one to another. 互变异构体现象:两种或多种化合物(同分异构体),具有相同的化学组成,但结构不同,很容易从一种转换到另一种。
- MNDO method and GAMESS90 programs have been employed respectively to investigate limited reaction pathways and to optimize structure of transition states for the keto-enol tautomerism. 采用MNDO方法和GAMESS90程序,对酮-烯醇互变异构进行了研究,得到了互变异构的极小能量反应途径及其过渡态的几何构型。
- Tautomerism is the common existence in Organic Chemistry. In this paper, the process of Tautomerizing relationship is further analyzed. 互变异构现象在有机化学中普遍存在,本文就互变异构关系中的历程作一浅析。
- DFT Study on Tautomerism of Gaseous Cytosine 密度泛函方法研究气相胞嘧啶的互变异构化
- carbodiimide cyanamide tautomerism 碳二亚胺-氨基氰互变异构体
- Study on tautomer of ethyl acetoacetate by UV 乙酰乙酸乙酯互变异构体的紫外光谱研究
- Keywords stone relics;repair;modified amine;modified ketimine; 石质文物;修复;改性胺;改性酮亚胺;
- Theoretical investigation on tautomerism of amrinone 氨力农互变异构的理论研究
