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- This work has been focused on the use of copper(I)-mediated anti-SN2’ allylic substitution reactions with non directing leaving groups. 论文提要内容: 在变化的经营环境当中,为了生存和发展,组织必须更灵活、弹性地加以应对。
- That is encouraging for palladium-catalyzed allylic substitution reactions which is difficult to use in industry due to the current low reactivity of catalysts. 而且,值得注意的是这类配体的反应活性都非常高,对于由于催化剂活性低难以在工业上应用的钯催化烯丙基取代反应来说,这无疑是一大喜讯。
- The progress in synthesis of chiral phosphinamine ligands is reviewed. Their applications in asymmetric allylic substitution, asymmetric 1, 4-conjugate addition and asymmetric hydroboration are described. 摘要本文较为详细地综述了轴向手性膦氮配体合成及其在不对称烯丙基取代反应、不对称1,4-共轭加成反应及不对称硼氢化反应中的应用。
- Allylic substitution and the allyl radical 烯丙基取代和
- Application of Chiral Ferrocene Ligands in Asymmetric Palladium Catalyzed Allylic Substitution Reactions 二茂铁配体在不对称烯丙基取代反应中的应用
- Keywords Chirality;Asymmetric Catalysis;Metallocene;H-transfer Hydrogenation;Allylic Substitution;Enamine; 手性;不对称催化;茂金属;氢转移氢化;烯丙基取代反应;烯胺;
- Keywords chiral ferrocene ligands;palladium-catalyzed reaction;asymmetric allylic substitution; 手性二茂铁配体;钯催化反应;不对称烯丙基取代;
- We use saccharin in substitution for sugar. 我们用糖精代替糖。
- Keywords axial chirality;phosphinamine ligands;asymmetric allylic substitution;asymmetric 1;4|conjugate addition;asymmetric hydroboration; 轴向手性;膦氮配体;不对称烯丙基取代反应;不对称1;4-共轭加成反应;不对称硼氢化反应;
- allylic substitution 烯丙取代
- allyl substitution 烯丙位取代
- Keywords Allyl substituted;Diaryl ether;Design;Synthesis;Biological activity; 烯丙基取代;二芳醚;设计;合成;生物活性;
- Substitution of a new obligation for an old one. 更新新契约对旧契约的替代
- The substitution of coal for oil is desirable. 以煤代替石油是可取的。
- A substitution, an exchange, or an interchange. 交换代替、交换或互换
- The substitution of the phoneme/l/ for/r/ . 错把1音发成r。
- Most programs can make a reasonable substitution. 大多数程序员可以找到更合理的替代方式。
- The South Korean coach requests substitution. 韩国队教练要求换人。
- To do this, we ll use the substitution command. 要这样做,将使用替代命令。
- An equal exchange or substitution. 替代物:一种平等的交换或替代。