Ru(II)‐Catalyzed Hydroarylation of in situ Generated 3,3,3‐Trifluoro‐1‐propyne by C−H Bond Activation: A Facile and Practical Access to β‐Trifluoromethylstyrenes
作者:Martin Vuagnat、Vincent Tognetti、Philippe Jubault、Tatiana Besset
DOI:10.1002/chem.202201928
日期:2022.10.4
in situ generated 3,3,3-trifluoropropyne from the inexpensive 2-bromo-3,3,3-trifluoropropene was developed to access β-trifluoromethylstyrenes. A wide range of (hetero)arenes was functionalized leading selectively to the E-isomers. Detailed mechanistic studies and DFT calculations supported the involvement of an arene-free cyclometallated Ru(II) species and a bis-cyclometallated Ru complex as key intermediate
开发了一种前所未有的 Ru 催化的C−H 键加氢芳基化反应,由廉价的 2-溴-3,3,3-三氟丙烯原位生成 3,3,3-三氟丙炔,以获取 β-三氟甲基苯乙烯。多种(杂)芳烃被官能化,选择性地产生E异构体。详细的机理研究和 DFT 计算支持不含芳烃的环金属化 Ru(II) 物质和双环金属化 Ru 络合物作为关键中间体的参与。