Synthetic Routes to N-Heterocyclic Carbene Complexes: Pyridine-Carbene Tautomerizations

Synthetic Routes to N-Heterocyclic Carbene Complexes: Pyridine-Carbene Tautomerizations

70 years ago the existence of the 2‐carbene isomer of pyridine, which arises by pyridine–carbene tautomerization (see scheme), was postulated. Now it has been prepared from pyridine as a stable carbene complex by metal‐induced CH activation. This pyridine–carbene tautomerization is described and di...

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Veröffentlicht in:Angewandte Chemie International Edition 2007-01, Vol.46 (19), p.3405-3408
1. Verfasser: Kunz, Doris
Format: Artikel
Sprache:eng
Schlagworte:
1,2 H‐shift
2 H-shift
carbenes
CH activation
pyridines
tautomerization
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Zusammenfassung:70 years ago the existence of the 2‐carbene isomer of pyridine, which arises by pyridine–carbene tautomerization (see scheme), was postulated. Now it has been prepared from pyridine as a stable carbene complex by metal‐induced CH activation. This pyridine–carbene tautomerization is described and discussed along with other analogous carbene tautomerization reactions.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.200700192