Iridium-catalyzed N-alkylation of diamines with glycerol

N-alkylation of 1,2-diaminocyclohexanes with glycerol in water, catalyzed by [Cp*IrCl2 ]2 , gives a mixture of 2-methyldecahydroquinoxaline and 2-(1-hydroxyethyl)-3a,4,5,6,7,7a-hexahydro-1H-benzimidazoles.