Synthesis and structure of styryl-substituted azines
作者:E. N. Gulakova、A. G. Sitin、L. G. Kuz’mina、O. A. Fedorova
DOI:10.1134/s107042801102014x
日期:2011.2
New photochromic derivatives of 2-styrylquinoline and 2-styrylquinoxaline were obtained by the condensation of the methyl derivatives of the mentioned heterocycles with substituted benzaldehydes in the presence of basic and acidic catalysts, and also under the conditions of Wittig reaction. The structure of compounds obtained was proved by physicochemical analysis methods including XRD.
Copper-catalyzed asymmetric silyl addition to alkenyl-substituted <i>N</i>-heteroarenes
作者:Ya-Li Zeng、Bo Chen、Ya-Ting Wang、Cheng-Yu He、Zi-Yuan Mu、Ji-Yuan Du、Long He、Wen-Dao Chu、Quan-Zhong Liu
DOI:10.1039/c9cc08910a
日期:——
Asymmetric conjugate addition of PhMe2SiBPin to a wide range of N-heteroaryl alkenes proceeded in the presence of a copper catalyst coordinated with an easily accessible chiral phosphoramidite ligand to afford useful β-silyl N-heteroarenes in high yields (up to 96%) and excellent enantioselectivities (up to 97% ee).