Mild Ti<sup>III</sup>- and Mn/Zr<sup>IV</sup>-Catalytic Reductive Coupling of Allylic Halides: Efficient Synthesis of Symmetric Terpenes
作者:Alejandro F. Barrero、M. Mar Herrador、José F. Quílez del Moral、Pilar Arteaga、Jesús F. Arteaga、Horacio R. Diéguez、Elena M. Sánchez
DOI:10.1021/jo062630a
日期:2007.4.1
Two new efficient methods for the regioselective homocoupling of allylichalidesusing either catalytic TiIII or the combination Mn/ZrIV catalyst have been developed. The regio- and stereoselectivity of the process proved to increase significantly when the Mn/ZrIV catalyst is used as the coupling reagent and when cyclic substituted allylichalides are used as substrates. The use of Lewis acids such