Supported Palladium Nanoparticles‐Catalyzed Synthesis of 3‐Substituted 2‐Quinolones from 2‐Iodoanilines and Alkynes Using Oxalic Acid as C1 Source
作者:Vandna Thakur、Ajay Sharma、Yamini、Nishtha Sharma、Pralay Das
DOI:10.1002/adsc.201801127
日期:2019.2
3‐Aryl/alkyl‐2‐quinolones were synthesized employing microwave assisted multicomponent reaction of 2‐iodoanilines, terminal alkynes and oxalic acid dihydrate ((CO2H)2 ⋅ 2H2O) under polystyrene supported palladium (Pd@PS) nanoparticles‐catalyzed conditions. The use of a heterogeneous palladium catalyst was explored first time for 2‐quinolone synthesis involving carbonylation reaction employing (CO2H)2 ⋅ 2H2O
合成3-芳基/烷基-2-喹诺酮类采用微波辅助的2- iodoanilines,末端炔烃和草酸二水合物的多组分反应((CO 2 2H)2 ⋅2H 2 O)下的聚苯乙烯支持钯(Pd @ PS)nanoparticles-催化条件。使用的非均相钯催化剂进行了探讨第一时间为2-喹诺酮合成涉及使用(CO羰基化反应2 2H)2 ⋅2H 2O为固态和台式稳定的一氧化碳(CO)源。该反应对2-碘苯胺和炔烃具有良好的底物通用性,具有宽泛的官能团耐受性和良好的区域选择性。该方案的无价优势在于无配体操作,非均相Pd @ PS催化剂的可回收性以及使用稳定的C1离子源。