Nickel Complex Catalyzed Efficient Activation of sp3 and sp2 C–H Bonds for Alkylation and Arylation of Oxygen Containing Heterocyclic Molecules
作者:Yashraj Gartia、Punnamchandar Ramidi、Darin E. Jones、Sharon Pulla、Anindya Ghosh
DOI:10.1007/s10562-013-1170-8
日期:2014.3
A nickel(II) complex (1) of N,N′-bis(2,6-diisopropylphenyl)-2,6-pyridinedicarboxamido (L) ligand was examined for catalytic coupling of Grignard reagents with the C–H bond of oxygen containing heterocyclic compounds such as tetrahydrofuran and furan. The nickel(II) complex showed excellent activity in catalyzing C–H activation and further coupling with various Grignard reagents. The effective activation
N,N'-双(2,6-二异丙基苯基)-2,6-吡啶二甲酰氨基 (L) 配体的镍 (II) 配合物 (1) 被检查用于格氏试剂与含氧的 C-H 键的催化偶联四氢呋喃、呋喃等杂环化合物。镍 (II) 配合物在催化 C-H 活化和进一步与各种格氏试剂偶联方面表现出优异的活性。C-H 键的有效活化在环境反应条件下进行,反应时间很短(1-2 小时)。催化剂 (1) 显示出 4,130 h-1 的高周转频率,催化剂负载量低至 0.01 mol%。这种催化途径可以证明是激活各种杂环中 sp3 和 sp2 C-H 键的有效模式,用于制备合成和药学相关分子。