期刊
JOURNAL OF ORGANOMETALLIC CHEMISTRY
卷 695, 期 2, 页码 256-259出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jorganchem.2009.10.002
关键词
Cyclopalladated compounds; Nitrogen ligands; Organic synthesis; Nicotinic acid derivatives
资金
- Universita di Sassari (FAR)
- Ministero dell'Universita e della Ricerca Scientifica (MIUR)
Taking advantage of palladium peculiar rollover C, N cyclometallation, it is possible to promote C(3) functionalization of 6-alkyl-substituted-2,2'-bipyridines. The carbonylation reaction of rollover species [Pd(L-n)Cl](2), (HL1 = 6-isopropyl-2,2'-bipy, 1; HL2 = 6-neopentyl-2,2'-bipy, 2; HL3 = 6-ethyl-2,2'-bipy, 3; HL4 = 6-methyl-2,2'-bipy, 4) allowed the synthesis of 2-(pyridin-2-yl)-6-alkyl-nicotinic acids or esters. These nicotinic derivatives are extremely rare and, as far as we know, quite unreported in the case of the 6-substituted molecules. (C) 2009 Elsevier B.V. All rights reserved.
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