Please use this identifier to cite or link to this item: https://doi.org/10.1039/c0dt01037e
Title: Pyrazolin-4-ylidenes: A new class of intriguing ligands
Authors: Han, Y. 
Huynh, H.V. 
Issue Date: 14-Mar-2011
Citation: Han, Y., Huynh, H.V. (2011-03-14). Pyrazolin-4-ylidenes: A new class of intriguing ligands. Dalton Transactions 40 (10) : 2141-2147. ScholarBank@NUS Repository. https://doi.org/10.1039/c0dt01037e
Abstract: The immense success of N-heterocyclic carbenes in recent years has initiated the search for even stronger ligands leading to the discovery of abnormal and remote NHCs. This article reflects our particular interest in the coordination chemistry of pyrazolin-4-ylidenes as a contribution to this field. A modular approach to 4-iodopyrazolium salts with different substitution patterns is described, which upon oxidative addition to Pd0 gave rise to a library of new Pd(ii) pyrazolin-4-ylidene complexes. A preliminary study showed that selected complexes are active precatalysts in Suzuki-Miyaura and Mizoroki-Heck coupling reactions. The 3,5-substituents of pyrazolin-4-ylidenes are found to have significant effects on complexation and catalytic activities. Finally, the nature of this new class of ligands is discussed, and a future direction for further explorations in this exciting field is envisioned. © 2011 The Royal Society of Chemistry.
Source Title: Dalton Transactions
URI: http://scholarbank.nus.edu.sg/handle/10635/95571
ISSN: 14779226
DOI: 10.1039/c0dt01037e
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