A theoretical study of imine hydrocyanation catalyzed by halogen-bonding
A detailed theoretical study of the mechanism and energetics of an organocatalysis based on C=N activation by halogen-bonding is presented for the hydrocyanation of N-benzylidenemethylamine. The calculations at the level of scalar-relativistic gradient-corrected density functional theory give an insight in this catalytic concept and provide information on the characteristics of four different monodentate catalyst candidates acting as halogen-bond donors during the reaction.
This paper introduces the theories of cationic modification of linen and puts forward the optimal process conditions of cationic modification and dyeing of linen through orthogonal experiment and analysis. By comparing and analyzing the dyeing samples of the cationised linen and non-cationised linen, it also shows that cationic modification has clear effect to enhance the dyeing capability of rhubarb on linen.