| 摘要 |
<p>The method comprises at least stages consisting of (a) reacting a compound of formula (II), in which formula (IV) refers to an electron-impoverished optionally substitute aromatic nucleus containing at least five carbon members, and in which subsitutes X, which are the same or different, are chosen from C1, Br and I, with a fluoride-based halogen/fluorine exchange reagent; and (b) reacting the product of the reaction in stage (a) with a cyanide-based a fluorine/cyanide exchange reagent in order selectively to form a compound of formula (I).</p> |
