1,3‐Difunctionalizations of [1.1.1]Propellane via 1,2‐Metallate Rearrangements of Boronate Complexes
作者:Songjie Yu、Changcheng Jing、Adam Noble、Varinder K. Aggarwal
DOI:10.1002/anie.201914875
日期:2020.3.2
structures is via multicomponent ring-opening reactions of [1.1.1]propellane. However, challenges associated with these transformations mean that difunctionalized BCPs are more commonly prepared by multistep reaction sequences with BCP-halide intermediates. Herein, we report three- and four-component 1,3-difunctionalizations of [1.1.1]propellane with organometallic reagents, organoboronic esters, and a variety
1,3-二取代的双环[1.1.1]戊烷(BCP)是对位取代的芳环的重要生物等排体。通往这些结构的最直接途径是通过[1.1.1]丙炔的多组分开环反应。然而,与这些转化相关的挑战意味着双官能化的BCP更通常是通过与BCP-卤化物中间体的多步反应序列制备的。在本文中,我们报道了[1.1.1]丙炔的三和四组分1,3-双官能团与有机金属试剂,有机硼酸酯和各种亲电试剂的关系。通过用硼酸酯捕获中间体BCP金属物种以形成硼酸酯络合物来实现此过程,硼酸酯络合物是通用中间体,其亲电试剂诱导的1,2-金属酸盐重排化学能够实现广泛的CC键形成反应。