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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。
- 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.
- 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;
- 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。
- 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。
- 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。
- The paper introduces implication of grignard reagent and application in organic synthesis ,such as,synthesis of alcohol,aldehyde,keto,acid and alkane,etc. 本文介绍了格利雅试剂的含意,格利雅试剂在合成中的主要应用(如:合成醇、醛、酮、酸、烃等)。
- The enol form decay rate of diCN-HBO decreases with increasing solvent polarity. 不过受限于实验仪器的侦测范围限制,仍然无法得到一明确结果。
- Immunoradioassay was used for the examination of brain cAMP, cGMP, TXB 2 and 6 keto PGF1a(metabolites of TXA 2 and PGI 2) contents. 各组到预定时间后 ,取脑组织匀浆 ,用放免进行环磷酸腺苷 (cAMP)、环磷酸鸟苷(cGMP)与TXB2 及 6 酮 (TXA2 、PGI2 稳定代谢产物 )含量测定 ,并对脑组织匀浆进行蛋白定量。
- 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。
- The efectofaddition ofsom e m etalions and keto acids on L-m alic acid ferm entation by im m obilized Aspergillus flavus wasstudied. 研究了某些金属离子和酮酸对固定化黄曲霉发酵L-苹果酸的影响。