Cyanoisopropyl radical induced cyclization and cyclopolymerization of N-methyl-N-(2-alkylallyl)amines and N-methyl-NN-bis-(2-alkylallyl)amines. A 13C nuclear magnetic resonance study

Abstract

The structures of the cyclic products from the cyanoisopropyl radical induced cyclization and cyclo-polymerization of N-methyl-N-allyl-N-(2- alkylallyl)amines and N-methyl-NN-bis-(2-alkylallyl)amines are shown by 13C n.m.r. spectroscopy to be pyrrolidines and piperidines, the proportion of each depending upon the bulk of the 2-alkyl substituent.