Chemoselective Hydrogenation of α,β-Unsaturated Carbonyls Catalyzed by Biomass-Derived Cobalt Nanoparticles in Water
作者:Tao Song、Zhiming Ma、Yong Yang
DOI:10.1002/cctc.201801987
日期:2019.2.20
selectivity for hydrogenation of C=C in α,β‐unsaturated carbonyls under mild conditions. A broad set of α,β‐aromatic and aliphatic unsaturated carbonyls were selectively reduced to their corresponding saturated carbonyls in up to 99 % yields with good tolerance of various functional groups. Meanwhile, a new straightforward one‐pot cascade synthesis of saturated carbonyls was realized with high activity and
在本文中,我们报道了由竹笋中的生物质衍生的碳负载的钴纳米颗粒与水中的分子氢在水中将α,β-不饱和羰基高度化学选择性氢化为饱和羰基,这是使用非均相非贵金属催化剂的首个原型据我们所知进行这种有机转型。最佳钴纳米催化剂CoO x@ NC-800在温和条件下表现出显着的活性,对α,β-不饱和羰基中的C = C进行氢化。广泛的α,β-芳族和脂族不饱和羰基被选择性还原为相应的饱和羰基,收率高达99%,并且对各种官能团具有良好的耐受性。同时,通过酮与醛的交叉羟醛缩合,然后进行选择性加氢,实现了一种新的,直接的,高活性和高选择性的饱和羰基单锅级联反应。更重要的是,这种单罐策略适用于从容易获得的起始原料合成卢瑞瑞林A(一种多功能的生物活性和药用分子)的权宜之计,这进一步突出了该催化剂的实用性。此外,