Synthesis and Properties of 2,3-Dialkynyl-1,4-benzoquinones
作者:Peter Hammershøj、Theis K. Reenberg、Michael Pittelkow、Christian B. Nielsen、Ole Hammerich、Jørn B. Christensen
DOI:10.1002/ejoc.200600081
日期:2006.6
Alkynyl substituents can be used to tune the acceptor properties of benzoquinones due to their slight electron-withdrawing abilities. Applications of new acceptors rely on efficient and practical synthetic procedures. Herein we describe a general and convenient approach for the synthesis of 2,3-dialkynyl-1,4-benzoquinones using a combination of regiospecific aromatic substitution, Sonogashira cross-couplings