作者:John A. Christopher、Laura Brophy、Sean M. Lynn、David D. Miller、Lisa A. Sloan、Graham Sandford
DOI:10.1016/j.jfluchem.2008.01.004
日期:2008.5
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
已经研究了4-溴-2,3,5,6-四氟吡啶的亲核取代的区域化学。与烷基胺,苄胺和醇盐亲核试剂发生有效的区域选择性反应,生成在环氮邻位发生取代的产物。所得的2-取代的4-溴-3,5,6-三氟吡啶可通过第二个区域选择性亲核取代或在4-位上钯催化的修饰进一步官能化。与芳族N-亲核试剂的反应产生邻位和对位取代产物的混合物。