A Ni-catalyzed halogenation of enol triflates was developed and it enables the synthesis of a broad range of alkenyl iodides, bromides, and chlorides under mild reaction conditions. The reaction utilizes inexpensive, bench-stable Ni(OAc)2 ⋅4 H2 O as a precatalyst and proceeds at room temperature in the presence of sub-stoichiometric Zn and either 1,5-cyclooctadiene or 4-(N,N-dimethylamino)pyridine
开发了
镍催化的烯醇
三氟甲磺酸酯卤化反应,能够在温和的反应条件下合成多种烯基
碘化物、
溴化物和
氯化物。该反应使用廉价、实验室稳定的 Ni(OAc)2·4 H2 O 作为预催化剂,并在亚
化学计量的 Zn 和
1,5-环辛二烯或 4-(N,N-二甲基
氨基) 存在下在室温下进行
吡啶。