Return to Article Details REGIO- AND STEREOSELECTIVE 1,3-DIPOLAR CYCLOADDITION OF INDENOQUINOXALINONE AZOMETHINE YLIDES TO β-NITROSTYRENES: SYNTHESIS OF SPIRO[INDENO[1,2-<i>b</i>]QUINOXALINE-11,3'-PYRROLIZIDINES] AND SPIRO[INDENO[1,2-<i>b</i>]QUINOXALINE-11,2'-PYRROLIDINES] Download Download PDF