Ruthenium-Catalyzed Regioselective 1,3-Methylene Transfer by Cleavage of Two Adjacent σ-Carbon−Carbon Bonds: An Easy and Selective Synthesis of Highly Subsituted Benzenes
作者:Jian-Jou Lian、Arjan Odedra、Chang-Jung Wu、Rai-Shung Liu
DOI:10.1021/ja0504901
日期:2005.3.1
6-cycloalkylidenyl-3,5-dien-1-ynes, which produces highly substituted benzenes with considerable structural reorganization. In this process, we observe a regioselective 1,3-methylene migration via extrusion from a cycloalkylidenyl ring, in addition to a regiocontrolled 1,2-alkyl migration. This cyclization provides an easy and convenient synthesis of complex benzenes bearing various different substituents.
我们报告了一种新的钌催化的 6,6-环亚烷基-3,5-二烯-1-炔的 6-endo-dig 环化,它产生了具有相当大的结构重组的高度取代的苯。在此过程中,除了区域控制的 1,2-烷基迁移外,我们还观察到通过从亚环烷基环挤出而发生的区域选择性 1,3-亚甲基迁移。这种环化为带有各种不同取代基的复杂苯的合成提供了一种简单方便的方法。