HX + Peroxide addition

[Franksta1118]

I know that the addition of HBr occurs anti markovnikov in the presence of a peroxide, however what happens with HCl, HF, and HI addition with a peroxide? I know this wont be anti markov, but will it even occur? if it occurs, I'm assuming its simply markovnivkov addition?

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[travelbug73]

Regardless of the presence of peroxides, HCl and HI only give Markovnikov's products (something about the chain propagation steps being endothermic and thus leading to very slow reactions: courtsey owlnet.rice.edu). I don't think HF is even used in these reactions given its explosive nature.

 

[iA-MD2013]

Yeah. I agree with the above post. But don't worry, I doubt AAMC would try to trick you by giving you a reaction with HCl and peroxide. Nevertheless, only HBr + peroxide works to give anti-markovnikov add'n. And HF is never used.