期刊
TETRAHEDRON
卷 63, 期 9, 页码 1963-1969出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2006.12.064
关键词
cyclopalladated ferrocenylimine; homocoupling; Sonogashira reaction; terminal alkynes
A novel pathway for homocoupling of terminal alkynes has been described using cyclopalladated ferrocenylimine 1 or 2/CuI as catalyst in the air. This catalytic system could tolerate several functional groups. The palladacycle 2 in the presence of n-Bu4NBR as an additive could be applied to Sonogashira. cross-coupling reaction of aryl iodides, aryl bromides, and some activated aryl chlorides with terminal alkynes under amine- and copper-free conditions, mostly to give moderate to excellent yields. (c) 2007 Elsevier Ltd. All rights reserved.
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