| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5276154 | Tetrahedron Letters | 2007 | 6 Pages |
Abstract
A core-shell type of polymer-supported N-heterocyclic carbene (NHC) palladium catalyst was applied to Sonogashira cross-coupling reactions without copper cocatalyst under ambient atmosphere. This supported NHC-palladium complex efficiently catalyzed the copper-free Sonogashira reaction of various aryl iodides and bromides with terminal alkynes; the reaction exhibited high dependency on the temperature and the amount of base as well as its nature. In addition, this heterogeneous catalyst exhibited good reusability for the copper-free Sonogashira reaction.
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Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Jong-Ho Kim, Dong-Ho Lee, Bong-Hyun Jun, Yoon-Sik Lee,