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- When we used ligand 4a in the asymmetric addition of phenylacetylene to aldehydes at room temperature, the highest ee was up to 99%. 当我们用配体4a作为催化剂在对苯乙炔对醛的不对称加成反应中,最高的ee可达99%25。
- SAA ligand Lg could catalyze asymmetric addition of phenylacetylene to unactivated aromatic ketones in high yields (up to 83%) and high enantioslectivities (up to 83%ee). SAA配体Lg用于催化炔基锌对未活化酮的不对称加成反应,对于芳香酮的催化反应,收率可达83%25,对映体选择性可达83%25ee。
- SAA ligand Lh could induce asymmetric addition of terminal alkyne to aldehydes without using air-sensitive Ti(O~iPr)4and expensive Zn(OTf)2.with good result of high yield (up to 99%) and good enantioselectivities (up to 84%ee). 将SAA配体Lh应用于在无Ti(O~iPr)_4和Zn(OTf)_2的条件下促进端基炔对醛的不对称加成反应中,反应的收率普遍较高,最高达99%25,对映体选择性高达84%25ee。
- Asymmetric addition of organometallic reagents to imines is a fertile method for the synthesis of optical active amines, an important class of compounds in biochemistry as well as in pharmaceutics. 摘要手性胺类化合物是一类重要的有机化合物，在生物化学及药物合成中有广泛应用。有机金属化合物对亚胺的不对称加成反应是合成手性胺类化合物的重要方法之一。
- The author proposes that the evaluation of CPs with a utilitarian versus hedonic base is subject to an asymmetric additivity effect. 特别的，以实用型基础的产品，在附加了不一致的、享乐功能会比附加一致的、实用的功能获得更多的增值。
- Keywords organozinc reagent;imine;asymmetric addition; 有机锌试剂;亚胺;不对称加成;
- Keywords aminoalcohol;asymmetric addition;carbonyl compound;chiral alcohol; 氨基醇配体;不对称加成;羰基化合物;手性醇;
- She has two cars and in addition a motorboat. 她有两辆轿车外加一艘汽艇。
- The little girl is not very clever at addition. 这个小女孩不太善于做加法。
- Ann will be a very useful addition to our team. 安来到我们队给我们增加了一员干将。
- In addition, we supply small parts for replacement. 此外，我们还提供备用小零件。
- Progress in the Asymmetric Addition of Diethyl Zinc to Aldehydes Using Chiral Catalyst 醛与二乙基锌的手性催化不对称加成研究进展
- THE SYNTHESIS OF SOLUBLE POLYMER-SUPPORTED CHIRAL BINOL LIGANDS AND ASYMMETRIC ADDITION REACTIONS 含光学活性联二萘酚基团可溶性高分子手性配体的合成及其不对称加成反应
- Addition and division are forms of computation. 加法和除法都是计算方法。
- Keywords tartaric acid diamide ligands;chiral tin complexes;asymmetric addition;benzaldehyde; 酒石酸二酰胺配体;手性锡络合物;不对称加成;苯甲醛;
- Keywords C_2 Unsymmetric;Chiral Vicinal Dimmines;Aryl zinc reagents;Diethylzinc;Asymmetric Addition; 非C_2对称;手性邻二胺;芳基锌试剂;二乙基锌;不对称加成;
- Keywords Asymmetric addition;Optically active organotitanium reagents;Chiral C2 diols .; 不对称加成反应;光学活性有机钛试剂;手性C2-二醇;
- Keywords Asymmetric addition reaction;aldehydes;ketones;sulfonamide alcohol;phenylacetylene;diethylzinc; 不对称催化;醛;酮;磺酰氨基醇;苯乙炔;二乙基锌;
- The baby is a new addition to our family. 这个婴儿是我们家新增的人丁。
- The addition of fruit makes the cereal taste good. 加了水果使谷类食品变得可口。
