Carbogallation of Alkynes Using Gallium Tribromide and Silyl Ketene Acetals and Synthetic Application to Cross-Coupling with Aryl Iodides
作者:Yoshihiro Nishimoto、Hiroki Ueda、Makoto Yasuda、Akio Baba
DOI:10.1002/chem.201102255
日期:2011.9.26
Try substituted alkynes with GaBr3: The regio‐ and stereoselective carbogallation of alkynes has been achieved by a simple treatment of GaBr3, alkynes, and ketenesilylacetals. The produced alkenylgallium compounds can be used for the synthesis of selective trisubstituted alkenes through successive cross‐coupling with aryliodides (see scheme). The usability of the carbogallation was presented by the