preparation of α-fluoroenones from propargyl acetates has been developed proceeding via a gold-catalyzed rearrangement-fluorination cascade. Control reactions are consistent with a mechanism involving a gold-mediated 3,3-sigma-tropic shift followed by a direct, nongold-catalyzed electrophilic fluorination of the allenyl acetate intermediate.
通过
金催化的重排-
氟化级联反应,开发了一种从
乙酸炔丙酯中非对映选择性制备α-
氟烯酮的方法。控制反应与涉及
金介导的 3,3-sigma-tropic 位移的机制一致,然后是
乙酸丙二酯中间体的直接、非
金催化的亲电
氟化。