regioselectivity
英
美
网络 区域选择性; 位置选择性; 选择性; 区位选择性; 向性
双语例句
- Regioselectivity and composition of the green nitration products between methyl salicylate and iron(ⅲ) nitrate
硝酸铁与水杨酸甲酯绿色硝化的选择性及其副产物组成的研究 - With the more and more applications in organic synthesis of the P-B reaction, its regioselectivity has attracted more and more attention.
随着P-B反应在有机合成中越来越广泛的应用，人们对P-B反应的区域选择性的研究也越来越深入。 - In this system good regioselectivity can be achieved mainly because of the existence of a porous support and the low dielectric constant of the reaction media.
一定条件下该硝化剂具有较好的反应位置选择性，这一是由于反应介质低的介电常数，二是多孔载体也具有明显的作用。 - Synthesis of KAD-1229 through Amidation of Bis-activated Esters and Discussion of Regioselectivity of the Reactions
二元活性酯胺解法合成米格列奈及其区域选择性的探讨 - DFT Study on regioselectivity of Murai reaction
Murai反应区位选择性的DFT研究 - These catalysts offered not only increased efficiency and turnover rate but also improved regioselectivity and stereo-selectivity.
这些催化剂提高了产物的产率和选择性。主要论述了矽氢加成反应催化剂的研究动向及发展。 - The yield and regioselectivity were investigated at various ratios of nitrate to salicylate with copper nitrate comparing with nitrous acid.
对比研究了在不同硝酸根和水杨酸甲酯配比条件下用硝酸铜和硝酸作硝化试剂时的硝化收率和区域选择性。 - We have studied the regioselectivity of this new radical reaction and proposed the mechanism.
并且进行了不对称1，3-二酮自由基反应化学选择性的初步研究，提出了反应机理。 - The regioselectivity observed in the reaction was explained in terms of FMO theory.
反应的方位选择性用前线轨道（FMO）理论进行了解释。 - Based on the rational examination of the relationship of the spatial structure, distribution of the functional groups of catalysts with the catalytic activity, regioselectivity and enantioselectivity, a general rule was suggested for the development of better chiral phosphite ligands.
通过分析这些手性催化剂的空间结构、基团分布与反应的催化活性、区域选择性和对映选择性之间的关系，总结了发展成功的手性亚磷酸酯配体的经验规律。 - Biological systems have many attractive features that include versatility, substrate selectivity, regioselectivity, chemoselectivity, enantioselectivity and catalysis at ambient temperatures and pressures.
生物学体系有许多吸引人的特征，包括多功能性、底物选择性、立构选择性、化学选择性、对映选择性以及在室温和常压下的催化作用。 - Based on the results, the reactivity of cyclic addition and regioselectivity are discussed.
根据实验结果对成环加成反应的活性和区域选择性进行了讨论。 - In this dissertation, we synthesized three types of new fullerene derivatives and investigated the regioselectivity of the mono-addition reactions of C_ ( 70).
本文主要工作是找到富勒烯化学修饰的三种新方法，合成了几类新型的富勒烯衍生物以及研究了C（70）单加成反应的区域选择性。 - Glyoxylate-ene reactions are available and important in natural product synthesis, their regioselectivity and asymmetric induction are dealt with in this paper.
乙醛酸酯的烯反应是有机合成中很重要的新反应。本文综述了该反应的区位选择性，不对称诱导及其在天然产物不对称合成中的应用。 - In this review, we describe the characteristics of biocatalysts, especially their regioselectivity and stereoselectivity.
本文综述了生物催化剂的类型及特征，特别是它与化学催化剂相比具有显著的特点：高效性和专一性； - Theoretical Study on the Regioselectivity of Nitrile Oxide 1,3-Dipolar Cycloaddition to Propyne
氧化腈与丙炔1,3-偶极环加成反应中区域选择性的理论研究 - Nucleophilic ring opening reaction of unsymmetric aziridines and its regioselectivity with various nucleophiles was reviewed systematically.
本文系统地总结了各类亲核试剂对非对称氮杂环丙烷（吖丙啶）的亲核开环反应及开环的区域选择性。 - The influence of the ligand-to-metal ratio, reaction temperature and the pressure of syn-gas on the catalytic activity, regioselectivity and enantioselectivity were also studied.
考察了反应温度、合成气压力、配体/金属比例等因素对反应的化学产率、区域选择性和对映选择性的影响。 - Attractive features of biocatalysis including high efficiency, versatility, substrate selectivity, regioselectivity, chemoselectivity, enantioselectivity and catalysis under mild conditions are reviewed.
生物催化吸引人的特征包括高效性、多样性、底物专一性、区域选择性、化学选择性、对映选择性以及温和的反应条件。 - The perturbation molecular orbital theory and the reactivity and regioselectivity of 1, 3-dipolar cycloaddition
微扰分子轨道理论与1,3-偶极环加成反应的反应性和区域选择性 - The regioselectivity and site selectivity of above cycloadditions can be elucidated by FMO theory.
用前线分子轨道（FMO）理论可以说明上述反应的区域选择性与位置选择性。 - Regioselectivity of active methylene reaction in ketones
区域选择性和酮的活泼亚甲基反应 - A model compound 1,6-bis-0-( triphenylmethyl)-D-mannitol ( TPMM) is synthesized, and the regioselectivity of periodate oxidation reaction of TPMM in mixed solvents is studied.
合成了模型化合物1,6-二-O-三苯甲基-D-甘露醇（TPMM），研究了它在混合溶剂中的高碘酸盐氧化反应的区选性。 - The regioselectivity and diastereoselectivity were also studied.
另外，对该反应的区域选择性也进行了研究。 - Selectivity for mono-chloromethylation was remarkably improved and regioselectivity was found to be dependent on the nature of the surfactant.
在两相胶束催化体系中，芳环化合物的单氯甲基化产物的选择性得到显著的改善，反应的区域选择性由表面活性剂的本质决定。 - These reactions have some advantages, such as high stereoselectivity, chemoselectivity, regioselectivity and so on.
该类反应具有很高的立体选择性、化学选择性、区域选择性和对映选择性等等。 - The features of these reactions are simple, easy to handle and good regioselectivity.
该类反应的特点是：反应体系简单、易处理、区域选择性好。 - In the study of the synthesis of sucrose esters, more research was focus on the biocatalyst synthesis because of its mild reaction condition and high regioselectivity.
在蔗糖酯合成工艺的研究中，生物催化合成法因其温和的反应条件和高度的区域选择性而备受关注。 - In order to explain the issues of the regioselectivity and the stereoselectivity, a density functional theory study was performed to explore the mechanism of aza-Michael addition.
为了解释反应在不同条件下的区域选择性和立体选择性问题，我们用密度泛函方法对反应机理进行了研究。 - One of the main reasons is the lack of regioselectivity in the traditional Fischer indole synthesis, when unsymmetrical ketones are taken as substrates.
造成这种现象的一个很重要的原因是传统Fischer吲哚合成法以非对称的酮作为底物时存在的区域选择性问题。