Reactant for total synthesis of (±)-dibromophakellin and analogs, synthesis of the pyrrolizidine alkaloid (±)-trachelanthamidine, stereo selective preparation of renieramycin G analogs, preparation of spirooxoindolepyrrolidines via reduction of indole-2-carboxylic acid followed by oxidation, condensation, reduction, amidation and Kharasch radical cyclization, Pd-catalyzed cyclization and N,N?-(pentane)diylbis[indolecarboxamide] and N,N?-[phenylenebis(methylene)]bis[indolecarboxamide] derivatives.