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Communication | Regular issue | Vol 12, No. 5, 1979, pp.661-664
Published online, 1st January, 1970
DOI: 10.3987/R-1979-05-0661
Formation of Primary Adducts in 1,3-Dipolar Cycloaddition of Disubstituted Cycloimmonium Ylides with 1,2,3-Triphenylcyclopropene

Kiyoshi Matsumoto* and Takane Uchida

*Graduate School of Human and Environmental Studies, Kyoto University, Yoshida-Nihonmatsu-cho, Sakyo-ku, Kyoto 606-8501, Japan


Pyridazinium, phthalazinium, 3-cyanopyridinium and 4-cyanopyridinium dicyanomethylides and isoquinolinium bis-(methoxycarbonyl)methylide underwent cycloaddition with triphenylcyclopropene to give the corresponding primary adducts (3 or 4). In the latter two cases, the indolizines (5a and 5e) were also isolated.