A nitrogen-ligated nickel-catalyst enables selective intermolecular cyclisation of β- and γ-amino alcohols with ketones: access to five and six-membered N-heterocycles
作者:Khushboo Singh、Mari Vellakkaran、Debasis Banerjee
DOI:10.1039/c8gc00318a
日期:——
sustainable Ni-catalysed dehydrogenative approach for the synthesis of pyrroles, pyridines, and quinolines by the reaction of β- and γ-amino alcohols with ketones via C–N and C–C bond formations in a tandem fashion. A variety of aryl, hetero-aryl, and alkyl ketones having free amine, halide, alkyl, alkoxy, alkene, activated benzyl, and pyridine moieties were converted into synthetically interesting 2,3 and 2
由于对N-杂环的合成的巨大需求,迫切需要开发利用可再生资源并将其利用非贵金属催化剂转化为关键化学品的新反应。本文中,我们证明了一种可持续的镍催化脱氢方法,可通过β-和γ-氨基醇与酮通过以下反应合成吡咯,吡啶和喹啉C–N和C–C键串联形成。具有游离胺,卤化物,烷基,烷氧基,烯烃,活化的苄基和吡啶部分的各种芳基,杂芳基和烷基酮被转化为合成上令人感兴趣的2,3和2,3,5-取代的双环以及三环N-杂环,产率高达90%。作为亮点,我们证明了类固醇激素与苯丙氨醇的分子间环化反应合成了有趣的吡咯衍生物。