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 highlyefficientsynthesis of alkoxythiophenes unlike previous pathways that have presented serious synthetic difficulties when
Synthesis of 2-Alkoxy-Substituted Thiophenes, 1,3-Thiazoles, and Related S-Heterocycles via Lawesson's Reagent-Mediated Cyclization under Microwave Irradiation: Applications for Liquid Crystal Synthesis
作者:Andre A. Kiryanov、Paul Sampson、Alexander J. Seed