Chiral <italic>N</italic>,<italic>N</italic>ʹ-dioxide and their metal complexes in asymmetric catalysis
نویسندگان
چکیده
منابع مشابه
Chiral poly-rare earth metal complexes in asymmetric catalysis
Asymmetric catalysis is a powerful component of modern synthetic organic chemistry. To further broaden the scope and utility of asymmetric catalysis, new basic concepts for the design of asymmetric catalysts are crucial. Because most chemical reactions involve bond-formation between two substrates or moieties, high enantioselectivity and catalyst activity should be realized if an asymmetric cat...
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A highly efficient asymmetric Mannich-type reaction between α-tetralone-derived β-keto esters/amides and 1,3,5-triaryl-1,3,5-triazinanes was realized in the presence of chiral N,N'-dioxide-Ni(ii) or Mg(ii) complex. A variety of optically active β-amino compounds with all-carbon quaternary stereocenters were obtained in good yields with excellent enantioselectivities. A possible transition state...
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The preparation of optically active molecules needs a chiral auxiliary. It is important to use the minimum amount of this auxiliary, and from that point of view asymmetric catalysis is much more advantageous than stoichiometric asymmetric synthesis. Some homogeneous catalysts prepared from chiral complexes have become during the past few years a useful tool in asymmetric synthesis. The complexe...
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ژورنال
عنوان ژورنال: Chinese Science Bulletin
سال: 2020
ISSN: 0023-074X
DOI: 10.1360/tb-2020-0158