An efficient carbonylative procedure for the synthesis of 3-arylquinoin-2(1H)-ones has been established. Through a palladium-catalyzed aminocarbonylation of benzylchlorides with anthranils, a variety of 3-arylquinoin-2(1H)-one products were obtained in moderate to excellent yields with good functional group tolerance.
已经建立了用于合成 3-arylquinoin-2(1 H )-ones 的有效羰基化方法。通过钯催化的苄基氯与邻氨基苯甲酰氨基羰基化反应,以中等至优异的收率获得了多种 3-arylquinoin-2(1 H )-one 产物,具有良好的官能团耐受性。
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 oxalicacid 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
Regioselective α-arylation of coumarins and 2-pyridones with phenylhydrazines under transition-metal-free conditions
作者:Parul Chauhan、Makthala Ravi、Shikha Singh、Prashant Prajapati、Prem P. Yadav
DOI:10.1039/c5ra20954d
日期:——
A transition-metal-free regioselective α-arylation of coumarins and 2-pyridones has been accomplished by the reaction of phenylhydrazines with coumarins or 2-pyridones.
一种无过渡金属的选择性α-芳基化反应已经成功实现,通过苯基肼与香豆素或2-吡啶酮的反应。
Synthesis of 3-substituted quinolin-2(1<i>H</i>)-ones<i>via</i>the cyclization of<i>o</i>-alkynylisocyanobenzenes
A facile synthesis of various functionalized 3-substituted quinolin-2(1H)-ones through Ag(I) nitrate-catalyzed cyclization of o-alkynylisocyanobenzenes is described. The reaction allows rapid and convenient access to 3-substituted quinolin-2(1H)-one scaffolds in moderate to good yields.
A palladium-catalyzedcarbonylative cyclization of benzylchlorides with o-nitrobenzaldehydes has been developed for the synthesis of 3-arylquinolin-2(1H)-ones. Mo(CO)6 played a dual role as both a CO surrogate and a reductant in this carbonylative transformation.
已经开发了钯催化的苄基氯与邻硝基苯甲醛的羰基化环化反应,用于合成 3-芳基喹啉-2(1 H )-酮。Mo(CO) 6在该羰基化转化中扮演着CO替代物和还原剂的双重角色。