Bromofluorination of bis(allyl)polyoxyethylene glycol ethers

The bromofluorination of bis(allyl)polyoxyethylene glycol ethers has been achieved by action of N-bromosuccinimide/triethylamine tris-hydrogenfluoride. For the starting 2-methylallyl ethers, the addition reaction is regioselective and only tertiary fluorine adducts were observed. Under the same conditions a mixture of addition and degradation products was observed from the nonbranched bis(allyl) ethers.