https://scholars.lib.ntu.edu.tw/handle/123456789/575713
標題: | Chiral tetra-coordinate aluminum cation in catalysis | 作者: | Hsu C.-P Liu Y.-H Boobalan R Lin Y.-F Chein R.-J CHING-WEN CHIU |
關鍵字: | Catalysis; Catalyst activity; Positive ions; Activation process; Aluminum cation; Aluminum complexes; Chiral amino alcohols; Chiral environment; High conversions; Lewis acidity; Tetra coordinate; Aluminum compounds | 公開日期: | 2021 | 卷: | 40 | 期: | 9 | 起(迄)頁: | 1244-1251 | 來源出版物: | Organometallics | 摘要: | Although the application of cationic aluminum complexes in catalysis has been extensively investigated, the incorporation of an aluminum cation into a chiral environment is less explored. In this study, a C2-symmetric chiral tetra-coordinate aluminum cation [3]+ bearing two chiral amino alcohol-derived ligands was prepared from commercially available starting materials in two steps. The high Lewis acidity of [3]+ exceeding that of B(C6F5)3 was verified by a competition binding experiment. Preliminary catalytic activity studies of [3]+ revealed that the tetra-coordinate aluminum cation is effective in accomplishing high conversion in all cases. However, the presence of a labile N?Al bond diminishes the enantioselectivity of the activation process. ? 2021 American Chemical Society |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85106438385&doi=10.1021%2facs.organomet.1c00036&partnerID=40&md5=6123a2eb808dd414909e5e441544d6cd https://scholars.lib.ntu.edu.tw/handle/123456789/575713 |
ISSN: | 2767333 | DOI: | 10.1021/acs.organomet.1c00036 |
顯示於: | 化學系 |
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