Mild basic ionic liquids catalyzed new four-component synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-diones

作者：Shaterian Hamid Reza^*; Mohammadnia Majid

来源：Journal of Molecular Liquids, 2012, 173: 55-61.

DOI：10.1016/j.molliq.2012.06.007

• Ionic liquids
• Phthalic anhydride
• Malononitrile
• Aldehyde
• Catalyst
• Solvent-free

A new four-component synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-dione derivatives using three weak basic ionic liquids such as 1,8-diazabicyclo[5.4.0]-undec-7-en-8-ium acetate, pyrrolidinium formate, and pyrrolidinium acetate as efficient catalysts for condensation reaction of hydrazine monohydrate, phthalic anhydride, malononitrile or ethyl cyanoacetate, and aromatic aldehydes under ambient and solvent-free conditions in excellent yields is described.

• 出版日期2012-9