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Published on: June 23, 2023
Intermolecular C-C Coupling between 1-Methyl-1,2,3-Triazole and 2,2'-Bipyridine or 1,10-Phenanthroline in MoII
Sergio Fombona1, Julio Pérez2,1, Jesús Díaz3
1Departamento de Química Orgánica e Inorgánica, Universidad de Oviedo, C/Julián Clavería, 8, 33006, Oviedo, Spain.
Abstract:
Unsupported 1-methyl-1,2,3-triazole has been coordinated to {Mo(η3 -methallyl)(CO)2 (N-N)} (N-N=2,2'-bipyridine, bipy; or 1,10-phenanthroline, phen) fragments, yielding cationic complexes that can be regarded as metalated triazolium salts. Their reactivity towards a strong base led to the deprotonation of the C5-H group of the triazole moiety, followed by an intermolecular nucleophilic attack to the ortho CH group of a bipy or phen ligand affording cyclic, bimetallic dearomatized C-C coupling products. The reaction of the neutral bipy derivative with an acid led to the formation of dihydropyridyl units by protonation of a CH group of the dearomatized rings, the dimeric nature of complexes being mantained upon protonation.
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