In(OTf)3-catalyzed intramolecular hydroarylation of α-phenylallyl β-ketosulfones provides sulfonyl 1-benzosuberones and 1-tetralones in moderate to good yields in refluxing (CH2Cl)2 under open-vessel and easy-operation reaction conditions. A plausible mechanism is proposed and discussed. This highly regioselective protocol provides an atom-economic ring-closure route.
In(OTf) 3催化的 α-苯基烯丙基 β-酮砜的分子内加氢芳基化在开放容器和易于操作的反应条件下,在回流 (CH 2 Cl) 2中以中等至良好的收率提供磺酰基 1-苯并亚砜和 1-四氢
萘酮。提出并讨论了一种似是而非的机制。这种高度区域选择性的协议提供了一种原子经济的闭环路线。