Highly Stereoselective Synthesis of <i>cis</i>-Alkenyl Pinacolboronates and Potassium <i>cis</i>-Alkenyltrifluoroborates via a Hydroboration/ Protodeboronation Approach
作者:Gary A. Molander、Noel M. Ellis
DOI:10.1021/jo801191v
日期:2008.9.1
alkynyl pinacolboronates bearing various functional groups were synthesized according to literature methods. These were then stereoselectively reduced to the cis-alkenylpinacolboronatesviahydroboration with dicyclohexylborane followed by chemoselective protodeboronation using acetic acid. Treatment with potassium hydrogen fluoride smoothly converted these to the corresponding potassium organotrifluoroborates