A Catalyst-free Green Protocol for the Synthesis of Pyranopyrazoles Using Room Temperature Ionic Liquid Choline Chloride-urea

被引:26
作者
Swaroop, Toreshettahally R. [1 ]
Kumar, Kothanahally S. Sharath [1 ]
Palanivelu, Mariyappan [2 ]
Chaitanya, Somu [1 ]
Rangappa, Kanchugarakoppal S. [1 ]
机构
[1] Univ Mysore, Dept Studies Chem, Mysore 570006, Karnataka, India
[2] Univ Madras, Dept Chem, Gurunanak Coll, Madras 600042, Tamil Nadu, India
关键词
ONE-POT SYNTHESIS; MULTICOMPONENT SYNTHESIS; DERIVATIVES; SOLVENT; MICROWAVE; MEDIA;
D O I
10.1002/jhet.1864
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
An efficient and rapid four component reaction of aldehydes, malanonitrile, -ketoesters and hydrazine hydrate (or phenyl hydrazine) in environmentally benign room temperature ionic liquid choline chloride-urea has been developed for the synthesis of substituted 4H-pyrano[2,3-c]pyrazoles.
引用
收藏
页码:1866 / 1870
页数:5
相关论文
共 35 条
[31]   Ionic liquids as novel and recyclable reaction media for N-alkylation of amino-9,10-anthraquinones by trialkyl phosphites [J].
Yavari, Issa ;
Kowsari, Elaheh .
TETRAHEDRON LETTERS, 2007, 48 (21) :3753-3756
[32]  
Zaki MEA, 2006, Z NATURFORSCH C, V61, P1
[33]   A facile one pot synthesis of pyrano[2,3-c]pyrazole derivatives under microwave irradiation [J].
Zhou, JF ;
Tu, SJ ;
Zhu, HQ ;
Zhi, SJ .
SYNTHETIC COMMUNICATIONS, 2002, 32 (21) :3363-3366
[34]   Supported choline chloride/urea as a heterogeneous catalyst for chemical fixation of carbon dioxide to cyclic carbonates [J].
Zhu, Anlian ;
Jiang, Tao ;
Han, Buxing ;
Zhang, Jicheng ;
Xie, Ye ;
Ma, Xiumin .
GREEN CHEMISTRY, 2007, 9 (02) :169-172
[35]   A novel and environment-friendly method for preparing dihydropyrano[2,3-c]pyrazoles in water under ultrasound irradiation [J].
Zou, Yi ;
Wu, Hui ;
Hu, Yu ;
Liu, Hai ;
Zhao, Xuan ;
Ji, Honglou ;
Shi, Daqing .
ULTRASONICS SONOCHEMISTRY, 2011, 18 (03) :708-712