The first enantioselective diamination of styrenes simply requires a chiral hypervalent iodine(III) reagent as an oxidant and bismesylimide as a nitrogen source (see scheme, Ms=methanesulfonyl). The reaction proceeds under mild conditions and with high enantiomeric excess.
![Enantioselective metal-free diamination of styrenes](https://www.iciq.org/wp-content/uploads/2014/03/Enantioselective-metal-free_9478.gif)