Troublesome Alkoxythiophenes. A Highly Efficient Synthesis via Cyclization of γ-Keto Esters
作者:Vaishali M. Sonpatki、Mark R. Herbert、Leah M. Sandvoss、Alexander J. Seed
DOI:10.1021/jo015644j
日期:2001.11.1
A variety of alkoxythiophenes have been synthesized that represent ideal subunits for the synthesis of a new class of thermotropic liquid crystals via palladium-catalyzed cross-coupling reactions and organometallic derivatization. The methodology used represents the first highly efficient synthesis of alkoxythiophenes unlike previous pathways that have presented serious synthetic difficulties when
已经合成了多种烷氧基噻吩,它们代表通过钯催化的交叉偶联反应和有机金属衍生化合成新型热致液晶的理想亚基。与以前的途径不同,当烷氧基链由四个以上的碳原子组成时,以前的途径存在严重的合成困难,所用的方法学代表了烷氧基噻吩的第一个高效合成。介绍了新方法的范围(相对于液晶中间体),并与现有文献进行了比较和对比。