Ligand-induced reactivity of β-diketiminate magnesium complexes for regioselective functionalization of fluoroarenes via C–H or C–F bond activations
作者:Laia Davin、Ross McLellan、Alan R. Kennedy、Eva Hevia
DOI:10.1039/c7cc07193k
日期:——
Using β-diketiminate Mg(II) complexes containing either alkyl, aryl or amide groups, the regioselective functionalization of a wide range of fluoroarenes is accomplished but in uniquely different ways. Overcoming common limitations of traditional s-block bases, kinetically activated [(DippNacnac)Mg(TMP)] (1) deprotonates these molecules at room temperature, trapping sensitive fluoroaryl anions that
使用含有烷基,芳基或酰胺基团的β-二酮化Mg(II)络合物,可以实现多种氟代芳烃的区域选择性官能化,但方式不同。克服了传统s-block碱的共同局限性,动力学活化的[(DippNacnac)Mg(TMP)](1)在室温下使这些分子去质子化,捕获了敏感的氟芳基阴离子,这些阴离子随后可以与Negishi交叉偶联反应;而[(DippNacnac)Mg(R)THF](R = nBu,Ph,苯并呋喃基)已证明是通过吡啶定向的CF键裂解作用进行CF键烷基化/芳基化的有效试剂。