Catalytic Metal-free Allylic C–H Amination of Terpenoids
作者:Wei Pin Teh、Derek C. Obenschain、Blaise M. Black、Forrest E. Michael
DOI:10.1021/jacs.0c06997
日期:2020.9.30
selective replacement of C-H bonds in complex molecules, especially natural products like terpenoids, is a highly efficient way to introduce new functionality and/or couple fragments. Here, we report the development of a new metal-free allylic amination of alkenes that allows the introduction of a widerange of nitrogen functionality at the allylic position of alkenes with unique regioselectivity and no
Gold nanoparticles-catalyzed activation of 1,2-disilanes: hydrolysis, silyl protection of alcohols and reduction of tert-benzylic alcohols
作者:Charis Gryparis、Manolis Stratakis
DOI:10.1039/c2cc35116a
日期:——
Gold nanoparticles supported on TiO2 catalyze under mild conditions the activation of a series of 1,2-disilanes towards hydrolysis and alcoholysis, with concomitant evolution of H2 gas. For the case of tert-benzyl alcohols, the main or only pathway is reduction to the corresponding alkanes.