Alici, B; Cetinkaya, E; Cetinkaya, B; Ulku, D; Tahir, MN
(1996)
Deprotonation of a 1,1'-bridged bis(1,3-diaikyl-1,4,5,6-tetrahydropyrimidinium) diiodide with NaH gives in high yield a tetraaminoalkene 4, whereas the corresponding non-bridged tetrahydropyrimidinium iodide reacts with ...