Lewis acid-promoted direct substitution of 2-methoxy-3-cyanopyridines by organo cuprates. Part 3: Facile preparation of nicotinamide and nicotinic acid derivatives
作者:Alaa A.-M. Abdel-Aziz
DOI:10.1016/j.tetlet.2007.02.096
日期:2007.4
various organo cuprates to afford the corresponding 2,4,6-trisubstituted nicotinonitriles. Subsequent hydrolysis of compounds 10 and 11 afforded the corresponding 2,4,6-trisubstituted nicotinic acid 22 and nicotinamide 23 derivatives, respectively. The mechanism of the displacement reaction has been studied experimentally and by molecular modeling calculations.
使2-甲氧基-3-氰基-4,6-二芳基吡啶与各种有机铜酸盐进行路易斯酸促进的亲核取代反应,得到相应的2,4,6-三取代烟腈。化合物10和11的随后水解分别得到相应的2,4,6-三取代的烟酸22和烟酰胺23衍生物。已经通过实验和分子模型计算研究了置换反应的机理。