Reduction of Amides to Amines with Pinacolborane Catalyzed by Heterogeneous Lanthanum Catalyst La(CH<sub>2</sub>C<sub>6</sub>H<sub>4</sub>NMe<sub>2</sub>-<i>o</i>)<sub>3</sub>@SBA-15
作者:Chenjun Guo、Fangcao Zhang、Chong Yu、Yunjie Luo
DOI:10.1021/acs.inorgchem.1c01531
日期:2021.9.6
Hydroboration of amides is a useful synthetic strategy to access the corresponding amines. In this contribution, it was found that the supported lanthanum benzyl material La(CH2C6H4NMe2-o)3@SBA-15 was highly active for the hydroboration of primary, secondary, and tertiary amides to amines with pinacolborane. These reactions selectively produced target amines and showed good tolerance for functional
酰胺的硼氢化是获得相应胺的有用合成策略。在该贡献中,发现负载的镧苄基材料 La(CH 2 C 6 H 4 NMe 2 - o ) 3 @SBA-15 对伯、仲和叔酰胺与频哪醇硼烷硼氢化成胺具有高度活性。这些反应选择性地产生目标胺,并显示出对 -NO 2等官能团的良好耐受性、-卤素和-CN,以及S和O等杂原子。这种还原过程表现出多相催化剂的可回收和可重复使用的特性,适用于克级合成。反应机理是基于一些控制实验和以前的文献提出的。这是由多相催化剂介导的酰胺硼氢化还原为胺的第一个例子。