Excellent acceleration of the Diels-Alder reaction by microwave irradiation for the synthesis of new fluorine-substituted ligands of NMDA receptor
作者:Shigeki Sasaki、Nobuyasu Ishibashi、Tshuneo Kuwamura、Hiromi Sano、Masaki Matoba、Tohru Nisikawa、Minoru Maeda
DOI:10.1016/s0960-894x(98)00541-1
日期:1998.11
A series of 6,11-ethanobenzo[b]quinolizinium derivatives was synthesized through the Diels-Alder reaction between azoniaanthracne and the corresponding 1,1-disubstituted olefin. After a systematic investigation for achieving rapid synthesis, it was found that the reaction is accelerated in polar media such as H2O and trifluoroethanol. In particular, excellent acceleration was effected by microwave irradiation. The new fluorine-substituted ligands thus obtained exhibited potential affinity toward NMDA receptors. (C) 1998 Elsevier Science Ltd. All rights reserved.