1114427-40-5Relevant articles and documents
Synthetic utility of 4-bromo-2,3,5,6-tetrafluoropyridine
Christopher, John A.,Brophy, Laura,Lynn, Sean M.,Miller, David D.,Sloan, Lisa A.,Sandford, Graham
, p. 447 - 454 (2008/12/21)
The regiochemistry of nucleophilic substitution of 4-bromo-2,3,5,6-tetrafluoropyridine has been investigated. Efficient, regioselective reactions occur with alkylamine, benzylamine and alkoxide nucleophiles, yielding products where substitution occurs ortho to the ring nitrogen. The resulting 2-substituted-4-bromo-3,5,6-trifluoropyridines can be functionalised further, either by a second regioselective nucleophilic displacement or palladium catalysed elaboration at the 4-position. Reactions with aromatic N-nucleophiles yield mixtures of ortho- and para-substituted products.