Nickel-Catalyzed Cross-Coupling of Alkyl Zinc Halides for the Formation of C(sp<sup>2</sup>)C(sp<sup>3</sup>) Bonds: Scope and Mechanism
作者:Vilasâ
B. Phapale、Manuel Guisán-Ceinos、Elena Buñuel、Diegoâ
J. Cárdenas
DOI:10.1002/chem.200901913
日期:2009.11.23
Optimal conditions for a general Ni‐catalysed Negishi cross‐coupling of alkyl zinc halides with aryl, heteroaryl and alkenyl halides have been determined. These conditions allow the reaction to take place smoothly, with low catalyst loading, and in the presence of a wide variety of functional groups to afford products in good yields at room temperature. DFT studies on the mechanism support the occurrence
确定了烷基锌卤化物与芳基,杂芳基和烯基卤化物的一般Ni催化Negishi交叉偶联的最佳条件。这些条件使得反应能够在低催化剂负载下并且在多种官能团的存在下平稳地进行,从而在室温下以高收率提供产物。在机构DFT研究支持的烷基卤化锌的催化循环中涉及转移金属化的发生,镍我随后氧化加成的卤代芳烃的和C Ç还原消除。