Labeling the remote sites of pyridines for drug discovery and mechanistic applications is a challenge that can be overcome by submitting heteroaromatic substrates to a base-mediated deuteration procedure using a combination of potassium tert-butoxide and deuterated DMSO. According to DFT investigations, the selectivity is controlled by the thermodynamic stability of the intermediary pyridyl anions
Catalytic selective deuteration of halo(hetero)arenes
作者:Manojkumar Janni、S. Peruncheralathan
DOI:10.1039/c6ob00193a
日期:——
Deuterium labeled aromatic and heteroaromatic compounds are synthesized in good to excellent yields with >98% deuterium purity via palladium catalyzed deuterodehalogenation reaction using commercially available and inexpensive reagents. Selectivedeuteration of bromoaniline is also demonstrated without H/D exchange in an amino N–H group.