An Efficient Homogenized Ruthenium(II) Pincer Complex for <i>N</i>
-Monoalkylation of Amines with Alcohols
作者:Fa-Liu Yang、Ying-Hui Wang、Yong-Feng Ni、Xiang Gao、Bing Song、Xinju Zhu、Xin-Qi Hao
DOI:10.1002/ejoc.201700486
日期:2017.6.30
An ionic 2,6-bis(imidazo[1,2-α]pyridin-2-yl)pyridine-based N^N^N pincer ruthenium(II) complex exhibited high efficiency in the C–N bond formation between amines and alcohols by the “borrowing hydrogen” (BH) or “hydrogen autotransfer” (HA) concept. The synthetic protocol selectively generated monoalkylated amines without formation of tertiary amines during the reaction. The unique selectivity enabled
离子2,6-双(咪唑并[1,2-α]吡啶-2-基)吡啶基N^N^N钳形钌(II)配合物在胺和醇之间形成C-N键时表现出高效率通过“借氢”(BH)或“氢自动转移”(HA)的概念。合成方案选择性地生成单烷基化胺,而不会在反应过程中形成叔胺。独特的选择性能够形成对称和不对称取代的二胺。这种方法具有几个优点,包括催化剂负载量低(低至 0.5 mol%)、反应时间短(短至 2 小时)和出色的 N-单烷基化选择性。