Synthesis of substituted 2,4-dimethylthieno[3,2-c]quinolines

Author： Avetisyan A.   Aleksanyan I.   Sargsyan K.  

Publisher： MAIK Nauka/Interperiodica

ISSN： 1070-4280

Source： Russian Journal of Organic Chemistry, Vol.43, Iss.3, 2007-03, pp. : 422-425

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Abstract

A procedure was developed for the synthesis of substituted 2,4-dimethylthieno[3,2-c]quinolines via intramolecular cyclization and subsequent aromatization of 3-(2-chloroprop-2-en-1-yl)-and 3-(2-oxopropyl)-2-methylquinoline-4-thiols. The latter were obtained by alkaline hydrolysis of the corresponding thiuronium salts which were prepared in turn by reactions of 4-chloro-3-(2-chloroprop-2-en-1-yl)-and 4-chloro-3-(2-oxopropyl)-2-methylquinolines with thiourea.

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