Hi,
The question asks if this compound (attached) could have been made from an alkene from a halogenation or halohydrin-forming reaction.
The answer key says yes. I'm having difficulties understanding how - I thought that the Cl's are supposed to be anti- to eachother after a Cl2 addition. I tried to explain this mechanistically, with the chloronium ion and I just don't see anything that would suggest syn- stereochemistry. I'm guessing it has something to do with the tertiary carbon, but I can't figure it out...