Efficient hydrosilylation of imines using catalysts based on iridium(III) metallacycles
Efficient hydrosilylation of imines using catalysts based on iridium(III) metallacycles
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DOI：
10.1039/c4cy01233j
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发表时间：
2015-03-01
影响因子：
5
通讯作者：
Michon, C.
中科院分区：
文献类型：
--
作者：
Corre, Y.;Iali, W.;Michon, C.
Ir（III）金属杂环化合物被用作催化剂用于各种酮亚胺和醛亚胺与四[（3，5-三氟甲基）苯基]硼酸钠（NaBArF 24）的硅氢加成反应。通过使用略微过量的有机硅烷试剂，反应在低催化剂负载量和室温下快速有效地进行。可以合成、表征和测试阳离子铱（III）催化剂的几个例子。原位生成的催化剂被证明是更活跃的，相比孤立的和物种与非配位BArF 24 counterparts给出了最高的催化活性。
Ir(III) metallacycles were applied as catalysts for the hydrosilylation of various ketimines and aldimines with sodium tetrakis[(3,5-trifluoromethyl)phenyl]borate, NaBArF24, as an additive. By using a slight excess of the organosilane reagent, the reactions proceeded rapidly and efficiently, at low catalyst loadings and at room temperature. Several examples of cationic Ir(III) catalysts could be synthesised, characterized and tested. In situ-generated catalysts proved to be more active as compared to isolated ones and species with non-coordinating BArF24 counterion gave the highest catalytic activities.