Abstract
A study of the 13C chemical shift data and of the shifts induced by Eu(dpm)3 has shown that the aminoketone formed in the reaction of N-methyl-N,N-diallylamine with cyanoisopropyl radicals is 2,6,6-trimethyl-cis-perhydroisoindolid-5-one (1a, R = O). The 13C NMR spectrum in the presence of acid reveals the existence of two protonated forms of this compound.