Synthesis 2015; 47(02): 216-220
DOI: 10.1055/s-0034-1379103
paper
© Georg Thieme Verlag Stuttgart · New York

Microwave-Assisted Copper-Powder-Catalyzed Coupling and Cyclization of β-Bromo-α,β-unsaturated Carboxylic Acids with 1,3-Diketones Leading to 2H-Pyran-2-ones

Son Long Ho
a   Department of Applied Chemistry, Kyungpook National University, Daegu 702-701, Republic of Korea   Fax: +82(53)9506594   Email: cscho@knu.ac.kr
,
Chan Sik Cho*
a   Department of Applied Chemistry, Kyungpook National University, Daegu 702-701, Republic of Korea   Fax: +82(53)9506594   Email: cscho@knu.ac.kr
,
Ho-Sang Sohn
b   Department of Materials Science and Metallurgical Engineering, Kyungpook National University, Daegu 702-701, Republic of Korea
› Author Affiliations
Further Information

Publication History

Received: 02 July 2014

Accepted after revision: 14 August 2014

Publication Date:
02 October 2014 (online)


Abstract

β-Bromo-α,β-unsaturated carboxylic acids were coupled and cyclized with 1,3-diketones by microwave irradiation in the presence of a catalytic amount of copper powder and base to give the corresponding 2H-pyran-2-ones in good to high yields.