作者:Antonie Dinculescu、Teodor-Silviu Balaban、Alexandru T Balaban
DOI:10.1016/s0040-4039(00)96307-x
日期:1987.1
β-N-Pyridinium acetaldehydes with alkyl substituents in the 2 and 6 positions of the pyridinium ring, obtained from the corresponding pyrylium salts, cyclise in alkaline medium to new indolizines. This high-yield reaction sequence is optimal for indolizines unsubstituted in the five-membered ring which are difficultly accessible by other methods.
由相应的吡啶鎓盐获得的在吡啶鎓环的2和6位具有烷基取代基的β- N-吡啶鎓乙醛在碱性介质中环化成新的吲哚嗪。对于在五元环中未被取代的吲哚类化合物来说,这种高产率的反应序列是最佳的,而吲哚类化合物是其他方法难以达到的。