Mild preparation of 1H-pyrazolo[1,2-b]phthalazine-5,10-dione derivatives with magnetic Fe3O4 nanoparticles coated by (3-aminopropyl)-triethoxysilane as catalyst under ambient and solvent-free conditions
Mild basic ionic liquids catalyzed new four-component synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-diones
作者:Hamid Reza Shaterian、Majid Mohammadnia
DOI:10.1016/j.molliq.2012.06.007
日期:2012.9
A new four-componentsynthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-dionederivatives 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