influence reaction regioselectivity remote to their local chemical environment are not widely reported in the literature. Herein, we report the development of remote regioselective electrophilic aromatic substitution (SEAr) reactions that are enabled via the application of the tetrafluoropyridyl (TFP) phenol-protecting group. We demonstrate that through sequential reactions and protection/deprotection of
Tetrafluoropyridyl (TFP): a general phenol protecting group readily cleaved under mild conditions
作者:William D. G. Brittain、Steven L. Cobb
DOI:10.1039/c8ob02899k
日期:——
tetrafluoropyridyl (TFP) group as a general protecting group for phenols. TFP can be installed in one step with no sensitivity to water or air, and it is stable under a range of commonly employed reaction conditions including acid and base. The TFP protecting group is readily cleaved undermildconditions with quantitative conversion to the parent phenol, observed in many cases in less than 1 hour.