Treatment of phenols or anilines containing a sulfonyl group in the presence of a hypervalent iodine reagent promotes a formal dearomatizing [2 + 3] cycloaddition reaction on unactivated benzene and naphthalene derivatives. This process occurs via an intramolecular nucleophilic addition to the Wheland species generated during the oxidative activation. Subsequent treatment under acidic conditions readily transforms the tricyclic system into a biaryl via a formal cross-coupling process.
                                    在高价
碘试剂存在下处理含有磺酰基的
酚或
苯胺会促进未活化的苯和
萘衍
生物发生正式的脱芳构化[2 + 3]环加成反应。该过程通过氧化活化过程中产生的 Wheland 物质的分子内亲核加成而发生。随后在酸性条件下的处理很容易通过正式的交叉偶联过程将
三环系统转化为联芳基。