Cyclic Diaryl λ<sup>3</sup>-Bromanes: A Rapid Access to Molecular Complexity via Cycloaddition Reactions
作者:Matteo Lanzi、Racha Abed Ali Abdine、Maxime De Abreu、Joanna Wencel-Delord
DOI:10.1021/acs.orglett.1c03278
日期:2021.12.3
we report the synthesis of dissymetric 2,3,2′,3′,4-substituted biaryls via pericyclic reactions of cyclic diaryl λ3-bromanes. The functional groups tolerance and atom economy allow access to molecular complexity in a single reaction step. Continuous flow protocol has been designed for the scale-up of the reaction, while postfunctionalizations have been developed taking advantage of the residual Br-atom
联芳基化合物在有机合成中有着广泛的应用。然而,由于制备具有挑战性,顺序多取代的联芳基化合物尚未得到充分开发。在此,我们报道了通过环状二芳基 λ 3 -溴的周环反应合成不对称的 2,3,2',3',4-取代的联芳基。官能团耐受性和原子经济性允许在单个反应步骤中获得分子复杂性。连续流动协议已被设计用于放大反应,而后功能化已开发利用剩余的 Br 原子。