In the bandwidth asymmetric network, the deficiency of the bandwidth on backward path will limit the return of the feedback information, resulting in the degradation of the TCP performance.

The Development of Novel Metallocene-based Chiral Ligands and Their Application in Asymmetric Catalysis;

Herein the synthesis and optical resolution of inherently chiral calixarenes and their applications in enantioselective recognition and asymmetric catalysis are reviewed.

A few spiro ligands have been successfully synthesized and applied in asymmetric catalysis.

The ad- vantages and disadvantages of enzyme method,diastereomer derivative method,inducing crystalliza- tion method and asymmetric transformation method are compared.

Based on these results, the asymmetric transformation of DLphydroxyphenylglycine was carried out via formation of salts with (+)lphenylethanesulfonic acid to give optical pure Dphydroxyphenylglycine with 98.

0), and when using acetic acid or acetic acid methanol as solvent the asymmetric transformation.

Study on application of asymmetric hydrogenation by chiral phosphorous ligand catalyst;

Synthesis and Asymmetric Hydrogenation of Novel Cyclic Enamides: (Z)-3-Arylidene-4-acyl-3, 4-dihydro-2H-benzoxazines;

Trans-cyclohexane-backbone iridium complexes with different axial chirality were synthesized from(1R,2S)-2-(pyridin-2-yl)cyclohexanol,and their application in asymmetric hydrogenation of(2H-chromen-3-yl)methanols was investigated.