@article{articlec3c21160,
title   = {Preparation of achiral and chiral (E)-enaminopyran-2,4-diones and their phytotoxic activity},
author = {Dias, Luiz C. and Demuner, Antônio J. and Valente, Vânia M. M. and Barbosa, Luiz C. A. and Martins, Felipe T. and Doriguetto, Antônio C. and Ellena, Javier},
year = {2009},
journal   = {Journal of Agricultural and Food Chemistry}
}