Studies in the indole series. Part VI. Tetrahydropyrimido[3,4-a]indoles and isotryptamines

Autor: A. Cohen, B. Heath-Brown, C. J. Cattanach
Rok vydání: 1971
Předmět:
Zdroj: Journal of the Chemical Society C: Organic. :359
ISSN: 0022-4952
DOI: 10.1039/j39710000359
Popis: Fischer cyclisation of phenylhydrazones of 1,3-disubstituted 4-piperidones leads, in general, to both tetrahydropyrimido[3,4-a]indoles and 3-substituted 2-(2-alkylaminoethyl)indoles (isotryptamines). The latter can also be synthesised in low yield from 3-substituted 2-methylindoles by the Mannich reaction. They are cyclised to tetrahydropyrimido[3,4-a]indoles by treatment with aldehydes.
Databáze: OpenAIRE