An acetylene zipper—Sonogashira reaction sequence for the efficient synthesis of conjugated arylalkadiynols
作者:Alexandra E. Kulyashova、Viktor N. Sorokoumov、Vladimir V. Popik、Irina A. Balova
DOI:10.1016/j.tetlet.2013.02.066
日期:2013.5
We describe a new approach to the preparation of unsymmetrical arylalkadiynols, which is based on the isomerization of readily available internal alkadiynols into their terminal isomers followed by Sonogashira cross-coupling. The influence of the reaction conditions on the efficiency of the 'acetylene zipper' of alkadiynols is investigated. Unstable terminal diynols are used without isolation in Pd/Cu-catalyzed cross-couplings with iodoarenes bearing either electron-withdrawing or electron-donating substituents. (C) 2013 Elsevier Ltd. All rights reserved.
Electrophilic Cyclization of Aryldiacetylenes in the Synthesis of Functionalized Enediynes Fused to a Heterocyclic Core
作者:N. A. Danilkina、A. E. Kulyashova、A. F. Khlebnikov、S. Bräse、I. A. Balova
DOI:10.1021/jo501396s
日期:2014.10.3
variety of asymmetrically substituted acyclic enediynes fused to heterocycles. The tolerance of the developed methodology to a variety of functional groups is a great advantage in the synthesis of macrocyclic enediyne systems fused to a heterocyclic core. Synthesis of indole-fused 12-membered macrocyclic dienediyne was achieved using ring-closingmetathesis as a key step.