Shuttle arylation by Rh(I) catalyzed reversible carbon–carbon bond activation of unstrained alcohols
作者:Marius D.R. Lutz、Valentina C.M. Gasser、Bill Morandi
DOI:10.1016/j.chempr.2021.02.029
日期:2021.4
transfer hydrogenation and borrowing hydrogen reactions paved the way to manipulate simple alcohols in previously unthinkable manners and circumvented the need for hydrogen gas. Analogously, transfer hydrocarbylation could greatly increase the versatility of tertiary alcohols. However, this reaction remains unexplored because of the challenges associated with the catalytic cleavage of unactivated C–C bonds
转移氢化和借用氢反应的出现为以以前无法想象的方式操作简单的醇铺平了道路,并避免了对氢气的需求。类似地,转移烃基化可以大大提高叔醇的多功能性。然而,由于与未活化的CC键的催化裂解有关的挑战,该反应仍未得到探索。在本文中,我们报道了铑(I)催化的穿梭芳基化反应,通过氧化还原中性β-碳消除机制,在未应变的三芳基醇中裂解C(sp 2)-C(sp 3)键。使用良性醇作为潜在的C,实现了从叔醇到酮的取代(杂)芳基的选择性转移烃基化-亲核试剂。所有初步的机械实验都支持可逆的β-碳消除/迁移插入机制。在更广泛的背景下,这种新颖的反应性为催化叔醇的操作提供了新的平台。