An efficient Pd-catalyzed cleavage of the MeâSi bond in ortho-trimethylsilyl aryltriflates was realized and synthetically applied. Most of the commercially available ortho-trimethylsilyl aryltriflates could undergo the Pd-catalyzed intermolecular coupling with alkynes via cleavage of the MeâSi bond, which represents a new reaction pattern of ortho-trimethylsilyl aryltriflates. Potassium bromide (KBr) was found effective for this process. A variety of benzosilole derivatives were thus generated in high yields.
一种高效的
钯催化正位-三甲基
硅基芳基
三氟甲磺酸酯中Me-Si键的断裂反应已经实现并进行了合成应用。大多数市售的正位-三甲基
硅基芳基
三氟甲磺酸酯可以通过Me-Si键的裂解与
炔烃进行
钯催化的分子间偶联,这代表了正位-三甲基
硅基芳基
三氟甲磺酸酯的新反应模式。发现
溴化钾(KBr)对该过程有效。因此,生成了多种苯并
硅唑衍
生物,并且产率较高。