trans-4-Hydroxy-l-proline: a novel starting material for N-alkylpyrroles synthesis
作者:A. Vijay Kumar、K. Rama Rao
DOI:10.1016/j.tetlet.2011.04.045
日期:2011.6
resulting in the formation of N-alkylpyrroles in good to excellent yields, via decarboxylation followed by redox isomerization under neutral conditions. The neutral conditions allow access to efficient synthesis of N-alkyl pyrroles with high functional group tolerance.
Single‐Atom Cobalt‐Catalyzed Transfer Hydrogenation of Azides and One‐Pot Synthesis of Pyrroles
作者:Dibyajyoti Panja、Anirban Sau、Seema D. Thakur、Sadhan Dey、Rajib Sahu、Sabuj Kundu
DOI:10.1002/adsc.202300556
日期:2023.9.5
single-atom cobalt-catalyzed transfer hydrogenation (TH) of azides is reported under mild conditions (at 30 °C in 30 min) using NH2NH2 ⋅ H2O as the hydrogen source. Employing this protocol, a wide range of azides were transformed to their corresponding amines. This methodology was extended towards the synthesis of several important N-substituted pyrroles from azides in one-pot manner. The control experiments
在这项工作中,报道了在温和条件下(30°C,30 分钟)使用 NH 2 NH 2 ⋅ H 2 O 作为氢源,单原子钴催化叠氮化物的转移氢化(TH)。采用该方案,多种叠氮化物被转化为其相应的胺。该方法被扩展到以一锅法从叠氮化物合成几种重要的N-取代吡咯。对照实验表明,吸电子取代基有利于转移氢化,给电子取代基有利于一锅吡咯合成。可回收性测试表明,催化剂可回收最多 7次,催化活性没有明显损失。