Yoshihiko Ito, Kazuhiro Kobayashi, Takeo Saegusa;
Author's Voice: [...]Herein, we wish to report a new and versatile synthesis of indole derivatives based on selective ortholithiation of the alkyl group in o-alkylphenylisocyanides and subsequent intramolecular ring closure.[...]
J. Am. Chem. Soc.; 1977;
99(10); 3532-3534.
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Fulltext:
http://pharmacist8.tripod.com/o-isocyanotoluenes.pdf