UNPRECEDENTED AND UNIQUE ELECTROREDUCTIVE REARRANGEMENT OF 4-(2-NITROPHENYL)-3,5-DICARBOALKOXY-1,4-DIHYDRO-PYRIDINES TO 3-CARBOALKOXYQUINOLINES

摘要

Electrochemical and Zn-promoted reduction of various 4-(2-nitrophenyl)-3,5-dicarboalkoxy-1,4-dihydropyridines brought about unprecedented and unique cyclization accompanying carbon-skeleton rearrangement to give the corresponding 3-carboalkoxyquinolines in good to excellent yields.