Taking advantage of a tautomerization process between (PNP)Sc鈺怤(DIPP)(NC5H5) (PNP = N[2-P(CHMe2)2-4-methylphenyl]2鈭?/sup>, DIPP = 2,6-iPr2C6H3) and (PNP)Sc(NH(DIPP))(畏2-NC5H4) (1), we demonstrate in this work that pyridine can be both activated and functionalized with isonitriles (in one case catalytically) to ultimately afford mono- and bis-imino-substituted pyridines. Several intermediates in the cycle have been isolated and characterized.
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