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Report | Regular issue | Vol 14, No. 2, 1980, pp.205-209
Published online, 1st January, 1970
DOI: 10.3987/R-1980-02-0205
1,3-Aninoic Cycloadditions of 2-Azaallyllithium Compounds to Ethylene. Synthesis of 2,5-Diarylpyrrolidines

Kazuyuki Kamata and Masanao Terashima*

*Faculty of Pharmaceutical Scicences, Higashinihonngakuen University, 1757 Kanazawa, Toubetu-cho, Ishikari-gun, Hokkaodo 061-0212, Japan

Abstract

Anionic cycloaddition of 1,3-diaryl-2-azaallyllithiums with the ethylene formed in situ by the cleavage of THF by n-butyllithium gave cis-2,5-diarylpyrrolidines in synthetically useful yields. The same cycloadducts were obtained from the reaction of 2a and 2c with ethylene itself.