Principle of "Doping-addition":

ion pair intermediate more polar ion (pair) intermediate   salt (electrolyte) nucleofugic anion   normal trans-addition   rearranged product(s)

Examples of "Doping-addition":

1. Participation of solvent:
   
2. 1,2-Thioamidation of olefins:
   
3. Skeletal rearrangements:
   

Main co-workers:

Literature:

1. Zefirov N. S., Novel reagents of iodine(+III) and sulfur. Pure and Applied Chemistry, 1996, 68, (4), 881-890.
2. Zefirov N. S., Koz'min A. S., Salt effects in electrophilic addition (Ad_E) reactions as a new principle of synthesis. Soviet Scientific Reviews. B. Chemistry, Harwood Academic Publishers GmbH, Amsterdam, 1985, 7, 297-339.
3. Zefirov N. S., Koz'min A. S., Zhdankin V. V., Participation of the ClO₄^- anion in addition reactions of ArSCl and halogens with unsaturated derivatives of tricyclo[4.2.2.0^2,5]decane. Synthesis of stable covalent perchlorates. Tetrahedron, 1982, 38, (2), 291-300.
4. Smit W. A., Zefirov N. S., Bodrikov I. V., Krimer M. Z., Episulfinium ions: myth and reality. Account of Chemical Research, 1979, 12, (8), 282-288.