Synthesis of heteroarylazulenes: transition metal free coupling strategy of azulene with heterocycles
作者:Taku Shoji、Ryuji Yokoyama、Shunji Ito、Masataka Watanabe、Kozo Toyota、Masafumi Yasunami、Noboru Morita
DOI:10.1016/j.tetlet.2006.12.083
日期:2007.2
Azulene reacts with highly electrophilic trifluoromethanesulfonates of N-containing heterocycles to give 1-dihydroheteroaryl and 1,3.-bis(dihydroheteroaryl)azulene derivatives in a good yield. Treatment of the dihydroheteroarylazulene derivatives with KOH or tert-BuOK afforded 1-heteroaryl and 1,3-bis(heteroaryl)azulenes in a good yield. (c) 2006 Elsevier Ltd. All rights reserved.