pyridines are common in pharmaceuticals, and metal catalysis is frequently used to prepare this motif via Csp2–Csp3 coupling processes. We present a cobalt-catalyzed coupling reaction between pyridine phosphonium salts and alkylzinc reagents that can be applied to complex drug-like fragments and for late-stage functionalization of pharmaceuticals. The reaction generally proceeds at room temperature, and 4-position
烷基化
吡啶在药物中很常见,并且
金属催化通常通过Csp 2 –Csp 3偶联过程用于制备该基序。我们提出了
吡啶phospho盐和烷基
锌试剂之间的
钴催化偶联反应,该反应可应用于复杂的药物样片段和药物的后期功能化。该反应通常在室温下进行,这种策略的前体是4-位
吡啶CH键。鉴于在复杂的
吡啶中选择性地安装(伪)卤化物面临的挑战,这种分两步进行的过程可以使分子集烷基化,这对使用传统的交叉偶联方法而言是具有挑战性的。