1) enantioselective reduction
对映选择性还原
1.
The enantioselective reduction of aromatic ketones was investigated by using celeriac chips as biocatalysts under mild and environmentally benign conditions, which afforded corresponding optically active (S)-1-aryl alcohols.
研究了用芹菜茎薄片在温和与环境友好的条件下催化芳香酮的对映选择性还原反应,制备得到具有光学活性的(S)-1-芳基醇,产物的对映选择性符合Prelog规则。
2) enantioselective
对映选择性
1.
Our calculations confirm that title reaction consists of two parallel step processes, in which complexes, TS, intermediates and enantiomer middle products are located on the enantioselective reaction pathway between oxazaphospholidine borane adduct and acetophenone.
应用密度泛函理论BHandH/6-31G**计算方法研究新型手性非金属催化剂1,3,2-噁唑磷烷-硼烷催化还原苯乙酮的对映选择性反应机理,确定了在反应途径上的反应物、络合物、过渡态,中间体和对映体中间产物。
2.
The enantioselective Diels-Alder reaction of N-propenoyl-1,3-oxazolidin-2-one with cyclopentadiene was catalyzed by free and polymer-supported complexes of titanium with N-sulfonyl-L-amino acids.
用磺酰化的L 缬氨酸、L 苯丙氨酸、L 亮氨酸和L 异亮氨酸的钛螯合物催化N 丙烯酰 1,3 唑烷 2 酮与环戊二烯的对映选择性Diels Alder (D A)反应 ,其ee值为 48。
3) enantioselectivity
对映选择性
1.
Control of biocatalysis enantioselectivity;
生物催化反应对映选择性控制
2.
which can catalyze the asymmetric Mannich reaction with high catalytic activity and excellent enantioselectivity.
目前报道的催化不对称Mannich反应的有机催化剂主要有脯氨酸及其衍生物、手性磷酸、手性(硫)脲和金鸡纳碱衍生物等,取得了良好的催化活性和对映选择性。
3.
High yields and excellent enantioselectivity were achieved in asymmetric or- ganic reactions involving imines,such as asymmetric Mannich,reductive amination,Pictet-Spengler, aza-Diels-Alder,aza-ene reactions and so on.
手性磷酸是近年来发展起来的一类新型高效、高对映选择性的Br(?)nsted酸类有机催化剂,已成功应用于催化不对称Mannich反应、还原胺化反应、Pictet-Spengler反应、aza-Diels-Alder反应和aza-Ene反应等许多重要的有机合成反应。
4) selective reduction
选择性还原
1.
Preparation of Cu/La_2O_3-ZrO_2-Al_2O_3 catalyst and its catalytic properties for selective reduction of NO;
Cu/La_2O_3-ZrO_2-Al_2O_3催化剂的制备及其对NO选择性还原的催化性能
2.
Research on the Selective Reduction of Nitro Aromatics in Fe-CO_2-H_2O System;
Fe-CO_2-H_2O体系中芳香硝基化合物的选择性还原研究
3.
Regio-and stereoselective reductions of steroidal ketones with poly-carbonyl groups
多羰基甾体化合物的区域和立体选择性还原(英文)
5) selective catalytic reduction
选择性还原
1.
The catalyst activity for the selective catalytic reduction of NO by propylene in excess oxygen was investigated.
考察了催化剂在富氧条件下催化丙烯选择性还原NO的性能,借助于X射线衍射(XRD)、扫描电镜(SEM)、N2吸附-脱附、吡啶吸附红外光谱(Py-IR)和程序升温还原(TPR)等方法研究了催化剂性能与结构的关系。
2.
The specific area and XRD spectra of the catalysts were characterized, and the selective catalytic reduction of NO over these catalysts by propene in the presence of oxygen was investigated.
采用溶胶 凝胶法(SG)制备了掺杂少量La或Ce的Pt/Al2O3贵金属催化剂和In2O3/Al2O3氧化物催化剂,并考察了La或Ce对催化剂的比表面和晶相结构和丙烯在这些催化剂上选择性还原NO的活性。
3.
The selective catalytic reduction(SCR) of NO with C3H6 in the presence of excess O2 over Ag/CeO2-ZrO2-Al2O3 catalyst was studied,the effcts of the content of CeO2 and the silver loading were investigated.
研究了Ag/CeO2-ZrO2-A l2O3催化剂在富氧条件下C3H6选择性还原NO的性能,讨论了CeO2含量,Ag负载量对催化剂性能的影响。
6) selective reduction of NO
NO选择性还原
1.
their catalysis properties for the selective reduction of NO under lean - bum conditions were investigated.
结果表明:利用沉淀加浸渍制备的样品对NO选择性还原具有较高的反应活性。
补充资料：对映体选择性化学传感器
分子式：
CAS号：
性质： 指对手性化合物外消旋混合物中某一对映体具有专一性或选择性电位或电流响应的一类传感器。它采用手性识别载体，即对手性化合物的各对映体具有选择配位作用的离子载体作敏感材料，因而具有手性识别功能，可实现手性化合物外消旋混合物中各对映体的同时定性识别与定量测定。
CAS号：
性质： 指对手性化合物外消旋混合物中某一对映体具有专一性或选择性电位或电流响应的一类传感器。它采用手性识别载体，即对手性化合物的各对映体具有选择配位作用的离子载体作敏感材料，因而具有手性识别功能，可实现手性化合物外消旋混合物中各对映体的同时定性识别与定量测定。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条