Zinc-Catalyzed Synthesis of Functionalized Furans and Triarylmethanes from Enynones and Alcohols or Azoles: Dual XH Bond Activation by Zinc
作者:Jesús González、Javier González、Carmela Pérez-Calleja、Luis A. López、Rubén Vicente
DOI:10.1002/anie.201301625
日期:2013.5.27
Ba'zinc'ga! A zinc‐catalyzed sequence involving a cyclization with a subsequent CO, CN, or CC bond formation enables the preparation of a variety of valuable furfuryl ethers (with alcohols) and unsymmetrically substituted triarylmethane derivatives (with azoles or arenes). ZnCl2 serves as the catalyst.
Catching Elusive 2-Furyl Carbenes with Silanes: A Metal-Free Microwave-Assisted Silicon-Hydrogen Bond Functionalization
作者:Silvia González-Pelayo、Luis A. López
DOI:10.1002/adsc.201601037
日期:2016.12.22
An efficient, metal‐free, silicon–hydrogen bond functionalization based on the microwave‐assisted reaction of readily available enynones and silanes is reported. This process seemingly proceeds through a 2‐furyl carbene species, a particularly elusive intermediate. Preliminary studies on the metal‐free oxygen–hydrogen and nitrogen–hydrogen bond functionalization of representative alcohols, azoles and