作者:L. I. Kas'yan、I. N. Tarabara、V. A. Pal'chikov、O. V. Krishchik、A. K. Isaev、A. O. Kas'yan
DOI:10.1007/s11178-005-0378-5
日期:2005.10
Reactions of bicyclo[2.2.1]hept-5-ene-endo-2,endo-3-dicarboxanhydride (endic anhydride) with 2-, 3-, and 4-aminopyridines, 3-hydroxy- and 5-iodo-2-aminopyridines, 6-aminoquinoline, and 6-aminoquinoxaline involve chemoselective transformation of the exocyclic amino group. The resulting amido acids were converted into the corresponding carboximides, and the latter were epoxidated with peroxy acids. The structure of the products was confirmed by the IR, UV, and 1H and 13C NMR spectra, as well as by calculation of the 1H and 13C chemical shifts using the GIAO method (B3LYP/6-31G** approximation).
双环[2.2.1]庚-5-烯-内-2,内-3-二羧酸酐(内芥酸酐)与2-, 3-, 和4-氨基吡啶、3-羟基和5-碘-2-氨基吡啶、6-氨基喹啉和6-氨基喹喞啉的反应涉及外环氨基的化学选择性转化。所得的酰胺酸被转化为相应的羧亚胺,后者用过氧酸进行环氧化。产品的结构通过红外(IR)、紫外(UV)以及1H和13C核磁共振(NMR)光谱确认,并使用GIAO方法(B3LYP/6-31G**近似)计算1H和13C化学位移进行验证。