A novel and practical homoconjugate addition of alkenyl, alkynyl, heteroaryl, and aryl trifluoroborates to arylated cyclopropyl ketones to synthesize γ,γ-disubstituted ketones is reported. A preliminary mechanistic proposal involving ketone protonation, an intermediary carbocation, and intermolecular nucleophile addition has been made based on control studies.
报道了新颖且实用的将三
氟硼酸烯基,炔基,杂芳基和芳基芳基的均轭加成到芳基化的环丙基酮上以合成γ,γ-二取代的酮。根据控制研究,提出了涉及酮质子化,中间碳正离子化和分子间亲核试剂加成的初步机理建议。