Intermolecular C−C Coupling between 1‐Methyl‐1, 2, 3‐Triazole and 2, 2′‐Bipyridine or 1, 10‐Phenanthroline in MoII Complexes. Issue 71 (20th October 2017)

• Record Type: Journal Article
• Authors: Fombona, Sergio; Pérez, Julio; Díaz, Jesús; Riera, Lucía
• Is Part Of: Chemistry. Volume 23:Issue 71(2017)
• Page Start: 17870
• Page End: 17873
• Publication Date: 2017-10-20
• Subjects: carbonyl complexes -- C−C coupling -- dearomatization -- molybdenum -- triazole; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201703524
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: Unsupported 1‐methyl‐1, 2, 3‐triazole has been coordinated to {Mo(η 3 ‐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. Abstract : Talkin′ ′bout deprotonation : The deprotonation of the C5−H group of a 1‐methyl‐1, 2, 3‐triazole ligand leads to intermolecular nucleophilic attack of the ortho CH group of a bipy or phen ligand affording bimetallic dearomatized C−C coupling products (see figure).