Synthesis 2008(3): 452-258  
DOI: 10.1055/s-2008-1032038
PAPER
© Georg Thieme Verlag Stuttgart · New York

Aqueous versus Neat Reaction Conditions: The Microwave-Assisted, Selective Conversion of a Fused Anhydride Ring with Amines in the Presence of a Keto Group

Jure Hren, Krištof Kranjc, Slovenko Polanc, Marijan Kočevar*
Faculty of Chemistry and Chemical Technology, University of Ljubljana, Aškerčeva 5, 1000 Ljubljana, Slovenia
Fax: +386(1)2419220; e-Mail: marijan.kocevar@fkkt.uni-lj.si;
Further Information

Publication History

Received 23 July 2007
Publication Date:
10 January 2008 (online)

Abstract

We describe the transformation of fused succinic anhydride derivatives of the bicyclo[2.2.2]oct-2-ene system with various amines under microwave-irradiation conditions. In aqueous suspensions, the reaction of an acetyl-containing derivative yielded chemoselectively succinimide derivatives with the acetyl group remaining unchanged. Conversely, the application of neat reaction conditions with a minor amount of a liquid additive (toluene) yielded succinimide derivatives with the acetyl moiety transformed into an imine group.