Transmission of substituent effects through -N-E-N- systems in unsymmetrically N,N'-substituted heteroimidazolidines where E = carbon, silicon, phosphorus(III), phosphorus(V), and boron
Transmission of substituent effects through -N-E-N- systems in unsymmetrically N,N'-substituted heteroimidazolidines where E = carbon, silicon, phosphorus(III), phosphorus(V), and boron