Synthesis 2013; 45(2): 205-218
DOI: 10.1055/s-0032-1316826
paper
© Georg Thieme Verlag Stuttgart · New York

Efficient [5+1] Synthesis of 4-Quinolones by Domino Amination and Conjugate Addition Reactions of 1-(2-Fluorophenyl)prop-2-yn-1-ones with Amines

Viktor O. Iaroshenko*
a   Institut für Chemie, Universität Rostock, Albert-Einstein-Str. 3a, 18059 Rostock, Germany   Fax: +49(381)49864112   Email: viktor.iaroshenko@uni-rostock.de
b   National Taras Shevchenko University, 62 Volodymyrska st., Kyiv-33, 01033, Ukraine   Email: iva108@googlemail.com
,
Satenik Mkrtchyan
a   Institut für Chemie, Universität Rostock, Albert-Einstein-Str. 3a, 18059 Rostock, Germany   Fax: +49(381)49864112   Email: viktor.iaroshenko@uni-rostock.de
,
Alexander Villinger
a   Institut für Chemie, Universität Rostock, Albert-Einstein-Str. 3a, 18059 Rostock, Germany   Fax: +49(381)49864112   Email: viktor.iaroshenko@uni-rostock.de
› Author Affiliations
Further Information

Publication History

Received: 14 September 2012

Accepted after revision: 19 November 2012

Publication Date:
07 December 2012 (online)


Abstract

A catalyst-free synthetic approach is described for the synthesis of 4-quinolone derivatives through a tandem amination/conjugated Michael addition sequence of 1-(2-fluorophenyl)prop-2-yn-1-one derivatives. The [5+1]-cyclization proceeds efficiently at a high temperature under an inert atmosphere with lithium carbonate as a base, and it provides a practical route to a diverse range of 4-quinolones. The mechanism was studied in details and several of the intermediates were isolated.

Supporting Information