| 摘要 |
<p>Tribromostyrene (TBS) is produced by the preparation of a TBS precursor, which is beta -bromoethyl-tribromobenzene ( beta -BrBr3), and the successive elimination of hydrogen bromide from said precursor. The precursor is prepared by selective bromination of phenethyl bromide ( beta -Br), wherein the molar ratio of bromine to phenethyl bromide is comprised between 2.5 and 3.5, and preferably between 3.1 and 3.3 included; and by adding bromine, after an initial addition, at a controlled molar rate.</p> |
