When in a rear naked choke, you don't have much time to react and defend yourself. After distracting with a strike somewhere, pull both arms across the body for a shoulder throw.
Self Defense | Takedown
The whole concept of the preemptive strike is to hit the opponent before the opponent hits you. In a self defense situation, make it clear that you don't want to fight before engaging with the strike.
MMA | Bob | Self Defense