Sulfamic Acid Catalyzed Atom Economic, Eco-friendly Synthesis of Novel 7-(Aryl)-10-thioxo-7,9,10,11-tetrahedro-6<i>H</i>
-pyrimido-[5′4′:5,6]pyrano[3,2-c]quinoline-6,8(5<i>H</i>
)-dione and its Derivatives
作者:Sunetra J. Jadhav、Reshma B. Patil、Digambar R. Kumbhar、Ajinkya A. Patravale、Dattatraya R. Chandam、Madhukar B. Deshmukh
DOI:10.1002/jhet.2807
日期:2017.7
A series of novel 7‐(3‐chloro‐phenyl)‐10‐thioxo‐7,9,10,11‐tetrahedro‐6H‐pyrimido‐[5′4′:5,6] pyrano[3,2‐c]quinoline‐6,8(5H)‐dione derivatives have been synthesized through the multi‐component condensation of aromatic aldehydes, barbituric acid, and 2,4‐dihydroxy quinoline, using heterogeneous sulfamic acid catalyst in water‐ethanol (4:1) solvent system under reflux condition. The present protocol is
一系列新颖的7-(3-氯苯基)-10-thioxo-7,9,10,11-tetrahedro-6 H-嘧啶-[5′4′:5,6]吡喃[3,2-c ]喹啉-6,8(5 H)-二酮衍生物是通过在水-乙醇(4:1)溶剂系统中在回流条件下使用非均相氨基磺酸催化剂通过芳香醛,巴比妥酸和2,4-二羟基喹啉的多组分缩合反应合成的。本方案具有迷人的描述,例如绿色合成步骤,反应时间短,操作简便,吡喃喹啉衍生物的收率高,经济性好。在这项研究中,氨基磺酸被用作易于回收和循环利用的非均相催化剂。拟议的多组分反应已通过详细的机理和光谱数据进行了研究。这是建立一系列吡喃喹啉杂环的潜在绿色合成方法之一。