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A Simple Preparation of Pyridine‐Derived N‐Heterocyclic Carbenes and Their Transformation into Bridging Ligands by Orthometalation
Author(s) -
Cabeza Javier A.,
del Río Ignacio,
PérezCarreño Enrique,
SánchezVega M. Gabriela,
VázquezGarcía Digna
Publication year - 2009
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200804945
Subject(s) - deprotonation , pyridinium , chemistry , pyridine , ruthenium , bridging (networking) , medicinal chemistry , combinatorial chemistry , polymer chemistry , stereochemistry , organic chemistry , catalysis , ion , computer network , computer science
Pyrid‐2‐ylidenes are trapped in solution by [Ru 3 (CO) 12 ] after being formed by deprotonation of N‐substituted pyridinium cations. The great basicity of these NHC ligands and the polynuclear character of the ruthenium cluster trigger room temperature orthometalation of the initial κ 1 ‐ C 2 ‐pyrid‐2‐ylidene ligands, leading to unprecedented face‐capping κ 2 ‐ C 2 , C 3 ‐pyrid‐3‐yl‐2‐ylidene ligands.