Reaction of 2-Methylene-2,3-Dihydroindoles with Acrylamide

Article abstract of DOI:10.1007/BF00633166

1,3-Dihydrospiro<2H-indolo-2,2'-piperidine> derivatives were obtained by the reaction of 2-methylene-2,3-dihydro-1H-indole derivatives with acrylamide in proton-containing solvents. 2-(3-Carbamoylpropyl)-3H-indolium perchlorates were formed when the 1,3-dihydrospiro<2H-indolo-2,2'-piperidine> derivatives were treated with perchloric acid.