Use of Ultrasound and Microwave Irradiation for Clean and Efficient Synthesis of 3,3’-(Arylmethylene)bis (2-hydroxynaphthalene-1,4-dione) Derivatives
Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=50714#.VEmpfFfHRK0 Author(s) Aldo S. de Oliveira , Luana C. Lianes , Ricardo J. Nunes , Rosendo A. Yunes , Inês M. C. Brighente Affiliation(s) Departamento de Química, Universidade Federal de Santa Catarina, Campus Universitário Trindade, Florianópolis, Brazil . ABSTRACT Nine 3,3’-(arylmethylene)bis(2-hydroxynaphthalene-1,4-dione) derivatives were synthesized through the reaction between 2-hydroxy-1,4-naphthalen-1,4-dione and different aromatic alde-hydes in water applying ultrasonic irradiation for 5 min at room temperature and microwave irradiation for 15 min at 70 ° ; C. Two of the nine derivatives, compounds 3-e and ...