One-drop organocatalyzed multicomponent synthesis of pyrazolo[1,2-b]phthalazine-diones and pyrazolophthalazinyl quinolines

被引:5
|
作者
Barge, Madhuri [1 ]
Rashinkar, Gajanan [2 ]
Kanase, Dhanaji [3 ]
Mohite, Suhas [4 ]
Lohar, Trushant [3 ]
机构
[1] Rayat Shikshan Sansthas Yashavantrao Chavan Inst, Satara 415004, MS, India
[2] Shivaji Univ, Dept Chem, Kolhapur 416004, Maharashtra, India
[3] Bharati Vidyapeeths Dr Patangrao Kadam Mahavidyal, Sangli 416416, MS, India
[4] Bharati Vidyapeeth Deemed Univ, Yashwantrao Mohite Coll Arts Sci & Commerce, Pune 411038, Maharashtra, India
关键词
Organocatalysts; Multicomponent reactions; 2-Chloro-3-quinolinecarboxaldeyde; Phthalhydrazides; Pyrazolo[1; 2-b]phthalazine-dione derivatives; N-METHYLIMIDAZOLE; GREEN SYNTHESIS; ONE-POT; DERIVATIVES; EFFICIENT; PHOSPHODIESTERASE; HYDROTROPE; CATALYST;
D O I
10.1007/s11164-022-04848-w
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The catalytic potential of organocatalyst N-methylimidazole is explored in the multicomponent reactions of aromatic aldehydes, malononitrile and 2,3-dihydro-phthalazine-1,4-dione/5-amino-2,3-dihydro-phthalazine-1,4-dione for the synthesis of pyrazolo[1,2-b]phthalazine-diones in ethanol under reflux conditions. The protocol has been successfully extended for the synthesis of pyrazolophthalazinyl quinolines using one-pot three-component reactions of 2-chloro-3-formylquinoline, malononitrile/ethyl cyanoacetate and 2,3-dihydro-phthalazine-1,4-dione/5-nitro-2,3-dihydro-phthalazine-1,4-dione. The reported method describes a straightforward and highly efficient protocol with remarkable advantages, including wide substrate scope, ready availability, lower cost of catalyst, operational simplicity and good to high isolated yields along with in-flask catalyst recycling.
引用
收藏
页码:5045 / 5058
页数:14
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