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Paper | Regular issue | Vol 31, No. 4, 1990, pp.683-690
Published online, 1st January, 1970
DOI: 10.3987/COM-90-5333
Preparation of Alkyl-substituted Indoles in the Benzene Portion. Part 3

Hideaki Muratake and Mitsutaka Natsume*

*Research Foundation Itsuu Laboratory, 2-28-10 Tamagawa, Setagaya-ku, Tokyo 158, Japan


Three-step synthesis of 7- and 4-alkyl-1-tosylindoles (9 and 10) was accomplished by combination of the Friedel-Crafts acylation of 4, and the treatment of 7 and 8 with H2SO4 in 2-propanol as illustrated in Chart 2. Further a novel synthetic method of 16 was devised from 14 by way of 15.