作者:Alan R. Katritzky、Robert T.C. Brownlee、Giuseppe Musumarra
DOI:10.1016/s0040-4020(01)83134-3
日期:1980.1
The reaction of primary and secondary amines with 2,4,6-triarylpyryliums is shown by C-13 NMR to proceed by fast ring opening to a vinylogous amide; in the case of primary amines this closes slowly to a pyridinium salt. The reaction in DMSO gives the pyridinium salt quantitatively when 2 moles of amines are used, with less amine significant quantities of a diketone intermediate are produced which results
C 13 NMR表明伯和仲胺与2,4,6-三芳基吡啶的反应是通过快速开环成乙烯基酰胺进行的。在伯胺的情况下,其缓慢闭合成吡啶鎓盐。当使用2摩尔的胺时,在DMSO中的反应定量地给出吡啶鎓盐,而胺较少时,产生大量的二酮中间体,这导致转化较慢。