Reactions of 4-(dimethylamino)pyridinium activated pentachloropyridine with nitrogen nucleophiles and hydride
作者:Andreas Schmidt、Jan Christoph Namyslo、Thorsten Mordhorst
DOI:10.1016/j.tet.2006.04.091
日期:2006.7
n-propylamine, isopropylamine, glycine, morpholine, and piperidine were examined. Highly functionalized Cl2,Cl3,N4,Cl5,Cl6- and N2,Cl3,N4,Cl5,Cl6-substituted pyridines were obtained, in part possessing unsubstituted 4-amino groups due to dealkylation. Detailed NMR studies were performed in order to elucidate the regiochemistry of these dealkylations.
2',3',5',6'-四氯-4-二甲基氨基-[1,4]联吡啶-1-基氯化铵与氮亲核试剂如正丙胺,异丙胺,甘氨酸,吗啉和哌啶的取代反应为检查。得到高度官能化的Cl 2,Cl 3,N 4,Cl 5,Cl 6-和N 2,Cl 3,N 4,Cl 5,Cl 6取代的吡啶,由于脱烷基而部分具有未取代的4-氨基。为了阐明这些脱烷基反应的区域化学,进行了详细的NMR研究。