| 摘要 |
Bromophenyl norbornenes are prepared by brominating a compound of the formula WITH A MIXTURE OF BROMINE AND CHLORINE IN THE PRESENCE OF AN ANTIMONY CATALYST; WHEREIN X is a halogen independently selected from the group consisting of fluorine, chlorine, bromine; Y is independently selected from the group consisting of fluorine, chlorine, bromine, alkyl of one to 10 carbon atoms, alkoxy of one to 10 carbon atoms, monohaloalkyl of one to 10 carbon atoms, wherein said halo is bromine, chlorine, or fluorine; R and R' are independently selected from the group consisting of hydrogen and alkyl of one to six carbon atoms; b = 0 or 1. The resulting compounds are useful as fire retardant additives.
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