Ring transformations of heterocyclic compounds.<b>XXII</b>. Pyrido[1,2-<i>a</i>]indolium salts from 2-methyl-3<i>H</i>-indoles by pyrylium mediated three carbon annelation
作者:Thomas Zimmermann、Lothar Hennig
DOI:10.1002/jhet.5570390203
日期:2002.3
The synthesis of pyrido[1,2-a]indolium perchlorates 8,11 from 2,4,6-triarylpyrylium perchlorates 1 and 2-methyl-3H-indoles 6,9 in the presence of a basic condensing agent (anhydrous sodium acetate, piperidine acetate, triethylamine/acetic acid, triethylamine) in ethanol by a 2,4-[C3+C2N] pyrylium ring transformation is reported. Spectroscopic data of the transformation products and their mode of formation
吡啶并合成[1,2一]吲哚鎓高氯酸盐-8,11-从2,4,6-三芳基高氯酸盐1和2-甲基-3- ħ -indoles 6,9在碱性缩合剂的存在下(无水醋酸钠报道了乙醇中乙酸哌啶,三乙胺/乙酸,三乙胺通过2,4- [C 3 + C 2 N]吡啶鎓环的转化。讨论了转化产物的光谱数据及其形成方式。