Journal
ORGANOMETALLICS
Volume 25, Issue 26, Pages 5976-5978Publisher
AMER CHEMICAL SOC
DOI: 10.1021/om060863m
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Reaction of a pyrrole imine with [IrCl2Cp*](2)/NaOAc leads to N- H activation in preference to C-H activation at the pyrrole; howeVer, with the N- methylated ligand C- H activation occurs. Density functional calculations show that N- H bond activation is both kinetically and thermodynamically preferred to C- H activation. Both reactions occur with relatively low energy barriers by an electrophilic agostic interaction with the metal with simultaneous intramolecular hydrogen bonding with acetate leading to deprotonation Via a six- membered transition state.
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