Tandem one pot asymmetric conjugate addition–vinyl triflate formation–cross coupling methodology
作者:Rosa M. Suárez、Diego Peña、Adriaan J. Minnaard、Ben L. Feringa
DOI:10.1039/b418028c
日期:——
Optically active vinyl triflates are obtained and employed in a series of one pot metal-catalyzed tandem asymmetric transformations.
获得了光学活性的乙烯三氟甲磺酸酯,并在一系列一步法金属催化的串联不对称转化中使用。
Tandem Asymmetric Conjugate Addition−Silylation of Enantiomerically Enriched Zinc Enolates. Synthetic Importance and Mechanistic Implications
作者:Oliver Knopff、Alexandre Alexakis
DOI:10.1021/ol026644o
日期:2002.10.1
cyclic and acyclic enones, could be trapped, quantitatively, as silyl enol ethers with TMSOTf in apolar solvents or with TMSCI and NEt3. These enantiomerically enriched silyl enol ethers were submitted to four synthetic transformations to show their synthetic utility. The zinc enolates obtained from acyclic enones were found to be configurationally stable, as shown by the stereochemistry of the silyl