Stannylation of Aryl Halides, Stille Cross-Coupling, and One-Pot, Two-Step Stannylation/Stille Cross-Coupling Reactions under Solvent-Free Conditions
作者:Pavel S. Gribanov、Yulia D. Golenko、Maxim A. Topchiy、Lidiya I. Minaeva、Andrey F. Asachenko、Mikhail S. Nechaev
DOI:10.1002/ejoc.201701463
日期:2018.1.10
and without the use of high purity reagents. The developed synthetic procedures are versatile, robust, and easily scalable. The absence of solvent, and the elimination of isolation procedures of aryl stannanes makes SSC protocol simple, step economical, and highly efficient for the synthesis of biaryls via one-pot two-step procedure.
首次报道了钯催化芳基卤化物、Stille 交叉偶联和一锅两步 stannylation/Stille 交叉偶联 (SSC) 的无溶剂协议。带有受体、供体以及空间要求的取代基的(杂)芳基卤化物以高产率被甲锡烷基化和/或偶联。该反应在空气中由常规的乙酸钯 (II)/PCy3 (Pd(OAc)2/PCy3) 催化,使用可用的碱 CsF,并且不使用高纯度试剂。开发的合成程序用途广泛、稳健且易于扩展。没有溶剂,并消除了芳基锡烷的分离程序,使 SSC 协议简单、步骤经济且高效,用于通过一锅两步程序合成联芳。