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Closed Access item Selective Alkylation of 2,6-Diiminopyridine Ligands by Dialkylmanganese Reagents: A “One-Pot” Synthetic Methodology

Authors:Cámpora, Juan
Pérez, Carmen M.
Rodríguez-Delgado, Antonio
Naz, A. Marcos
Palma Ramírez, Pilar
Álvarez, Eleuterio
Keywords:Alkylation, Dialkylmanganese, Hydrolysis, Pyridine, Olefin polymerization
Issue Date:20-Jan-2007
Publisher:American Chemical Society
Citation:Organometallics 26(4): 1104-1107 (2007)
Abstract:A “one pot” synthesis of new 2,6-diimine-4-alkylpyridines is reported. The addition of 2,6-[2,6-iPr2C6H3N C(Me)]2C5H3N to the preformed MnR2(THF)n (R = CH2CMe2Ph, CH2Ph, CH2CH CH2), followed by hydrolysis affords a mixture of 4-alkyl 2,6-bis(imino) derivatives of pyridine and 1,4-dihydropyridine in a variable ratio. Treatment of the mixture with a substoichiometric amount of CrO3/K2CO3 in THF provides the 4-alkyl-2,6-diiminopyridines in good isolated yields and in a highly selective manner.
Description:4 páginas, 1 figura, 3 esquemas.
Publisher version (URL):http://dx.doi.org/10.1021/om0609517
Appears in Collections:(IIQ) Artículos

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