TiCl"4 induced iminium ion cyclizations of α-cyanoamines - Yang, T.-K.; Hung, S.-M.; Lee, D.-S.; Hong, A.-W.; Cheng, C.-C. (Elsevier)
Tertiary α-cyanoamines served as the precusors of iminium ions in the presence of titanium tetrachloride. Various intramolecular nucleophiles, olefinic and acetylenic, were found to produce cyclized products. The influences of ring sizes and substitutions on the double bonds were also investigated.
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Keywords: V