A highly regioselective reaction of<i>N</i>-fluoropyridinium salts with stabilized sulfur, oxygen, and nitrogen nucleophiles: A convenient route to 2-substituted pyridines
作者:Alexander S. Kiselyov、Lucjan Strekowski
DOI:10.1002/jhet.5570300530
日期:1993.10
2-Substituted pyridines are efficiently obtained by the reactions of N-fluoropyridinium tetrafluoroborate or triflate with anions derived from benzenethiols, phenols, azoles, cyanamide, and with azide anion. The results are consistent with a nucleophile addition at the position 2 of the N-fluoropyridinium cation as the major reaction pathway.
通过N-氟吡啶鎓四氟硼酸酯或三氟甲磺酸酯与衍生自苯硫酚,苯酚,唑,氰胺的阴离子以及叠氮化物阴离子的反应,可以有效地获得2-取代的吡啶。该结果与在N-氟吡啶鎓阳离子的2位作为主要反应途径的亲核试剂的添加一致。