Abstract
One of the two vinyl groups of 1,3-divinylbenzene (1,3-DVB) was selectively brominated by pyridium hydrobromide perbromide (PyHBr 3) to form a new styrene derivative, 3-(1,2-dibromoethyl)styrene (3-DBS). The high selectivity is apparently the result of an electron-inductive effect by the 1,2-dibromoethyl group, and the ralatively mild activity of the brominating agent. The resulting monomer exhibits Q = 1.26 and e = 0.06 in its copolymerization with styrene. The chain transfer constant to this monomer was also estimated. From the copolymer of 3-DBS with styrene of DVB, polymers with pendent vinyl groups were synthesized.
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